n-Track Studio Pro — Full Operations Manual

1. Setup & Configuration

First Launch

• Install n-Track Studio Pro from Google Play. Open it. You're in Pro tier — unlimited tracks unlocked (free tier caps at 8).
• The app prompts for storage permission on first launch. Grant it — this is required for the app to read MIDI files, audio files, and save projects to your device.
• Open the gear (Settings) icon at the top of the main screen.

Audio Settings

• Sample rate: 44100 Hz default (matches streaming and most loops). Change to 48000 Hz only if working alongside video.
• Buffer size: Start at 512 samples. Lower for less latency during recording (256 or 128 if your phone can handle it). Raise to 1024 if you hear audio dropouts during heavy plugin chains.
• Audio system: If your device offers Oboe/AAudio (Android 8+), use that — it's the lowest-latency Android audio path. Falls back to OpenSL ES on older devices.

MIDI Settings

• USB MIDI controller: Plug in an MPK Mini IV or any USB MIDI keyboard via USB-C OTG adapter. n-Track auto-detects it. Pads and keys send MIDI immediately.
• Bluetooth MIDI: Supported but flakier. Use USB OTG when possible — wired MIDI is always more reliable on Android.
• On-screen MIDI keyboard: Always available at the bottom of the screen. Scrollable across octaves. Velocity-sensitive based on tap pressure (on supported devices) or fixed velocity (older devices).

2. Interface Overview

The Main Sections

• Timeline view: The arrangement view. Tracks stacked vertically, time scrolling horizontally. Where audio clips and MIDI parts live.
• Mixer view: Swipe or tap to access. Vertical channel strips for every track — volume, pan, mute, solo, effects, sends.
• Piano Roll view: Double-tap a MIDI clip to open. The full piano-roll editor with note draw, velocity lane, and selection tools.
• Step Sequencer Beat Maker: Built-in pattern grid for fast drum programming. Accessed from any drum track or by adding a Drums channel.
• Loop Browser: Built-in royalty-free loop library. Browse by genre, BPM, key. Drag onto the timeline.
• Sample Packs: In-app sample packs available for purchase or free download. Browse via the Add-On manager.

The Track Header

Each track has a header on the left side showing:

• Track name (tap to rename).
• Volume fader.
• Mute/Solo buttons.
• Record-arm button.
• Effects slot indicator.
• Instrument selector (for MIDI tracks — shows the loaded synth).

The Transport Bar

• Play/Stop, Record, Loop toggle, Tempo display (tap to change), Metronome toggle, Position display (current bar/beat).
• Tap and hold the position display to jump to a specific bar.

3. Adding Tracks & Instruments

Track Types

• Stereo audio track: Stereo recording (mic via interface, or imported stereo files).
• Mono audio track: Single-channel recording — vocals, single mic, line input.
• MIDI track: MIDI data routed to a built-in synth or sampler. Lighter on CPU than audio tracks.
• Drum Pattern track: Special MIDI track type that opens directly into the step sequencer for fast drum programming.
• Group & Aux channels: Pro tier supports both. Group = sub-bus combining multiple tracks. Aux = send-effect return.

Built-In Instruments

• Onda Synth (mobile version): Multi-oscillator subtractive synth with filter, envelopes, LFOs. Lighter than desktop Onda but covers leads, basses, pads on mobile.
• n-Track Drums: Drum machine with step sequencer mode. Built-in kits for trap, rock, EDM, acoustic. Load custom samples on pads.
• n-Track Sampler: Load any WAV file and play it chromatically across the keyboard.
• Built-in soundbanks: Pianos, electric pianos, organs, strings, brass, basses, leads, pads. Browse via the instrument selector.
• Guitar Amp / Bass Amp plugins: Pro feature. Multiple amp head models, cabinet simulations. Insert on guitar/bass audio tracks for amp tone without external pedals.

Adding Custom Soundbanks

• Open the Add-On Manager (from main menu).
• Browse available content — free and paid soundbanks, sample packs, loop libraries.
• Download → automatically appears in the instrument list.
• Free packs cover most production needs. Paid packs add premium content for specific genres.

4. MIDI File Import — Bringing MIDI Into Your Project (My Way)

This is the section that should exist for every mobile DAW and almost never does. You found a MIDI melody online, downloaded a MIDI drum pack, or exported MIDI from another app — and you want it inside your current n-Track project. n-Track Pro handles this gracefully but the workflow isn't obvious.

Method 1 — The Import Track Button

• With your project open, tap the "+" button to add a track.
• Select Import existing track from the options.
• The file browser opens. Navigate to your MIDI file's location on the device — Downloads, your file manager's path, or wherever you saved it.
• Tap the .mid file. n-Track imports it into your project at the playhead position.
• If the MIDI file has multiple tracks, n-Track creates separate tracks for each, with appropriate instruments assigned (the v10.1 multi-track auto-instrument-assign feature works on mobile too).
• The project stays open. Nothing is lost. The MIDI lands inside your current session.

Method 2 — "Share With" From Another App

• Open Google Drive (or Dropbox, Gmail, your file manager — any app holding the .mid file).
• Long-press the file → tap Share or Open with.
• Select n-Track Studio Pro from the apps list.
• If n-Track is running with a project open, the MIDI is added to that project.
• If n-Track isn't running, it launches and prompts you to open the MIDI as a new project or merge into the most recent one.

Method 3 — From the Songs Browser

• n-Track's Song Browser indexes files on your device that match supported formats — including MIDI files.
• Browse the Songs view → find your .mid files alongside your saved projects.
• Tap to open the MIDI as a new project, or use the merge option to add to an existing project.

What Happens to MIDI After Import

• Multi-track MIDI: Each track in the original file becomes its own MIDI track in n-Track. Drums on its own track, bass on its own, melody on its own — automatic separation.
• Single-track MIDI (Type 0): Imports as one combined MIDI track. All channels merged but channel data preserved internally.
• Instrument assignment: n-Track v10.1+ assigns the correct General MIDI instrument for each track. Drums get a drum kit, bass gets a bass patch, etc. Cleaner than the bad old days of "16 tracks of grand piano."
• Tempo: If the imported MIDI has its own tempo info, n-Track will offer to either match the project to that tempo OR play the MIDI at the current project tempo (timing is preserved relatively).

Replacing Instruments After Import

The default GM instruments are rarely what you actually want. Swap them:

• Tap the imported track's instrument slot.
• Browse the instrument library — built-in soundbanks, downloaded Add-On content, n-Track Sampler with your own samples.
• Select the replacement. Notes stay; sound changes instantly.

Editing Imported MIDI

• Double-tap any imported MIDI clip → opens in piano roll.
• Tap notes to select, drag to move, drag note edges to resize.
• Add new notes with the pencil tool.
• Quantize: select notes → menu → Quantize → choose grid resolution.
• Velocity: bottom lane shows per-note velocity. Drag bars to adjust.

The MIDI Library Habit

• Build a folder on your device — call it "MIDI Library" or similar — and dump every useful .mid file you find into it.
• Genre-organize subfolders: drums, chords, melodies, basslines.
• Every n-Track Pro session can browse straight to that folder via the Import dialog. Drop in MIDI in seconds instead of recreating ideas from scratch.
• Sources for MIDI: free MIDI packs on YouTube/Reddit, Splice (the free tier includes some MIDI), Cymatics (occasional free MIDI giveaways), your own exports from Cubase or other DAWs on desktop.

5. Recording — Audio & MIDI on Mobile

Audio Recording (Vocals, Live Instruments)

• Add an audio track. Tap the input selector → choose your input source (built-in mic, USB audio interface, USB mic).
• Tap the record-arm button on the track (turns red).
• Hit the global Record button on the transport.
• Perform. Tap Stop when done. WAV file saved to project.
• Multiple takes can be recorded on the same section — n-Track preserves takes so you can comp the best parts later.

MIDI Recording

• Add a MIDI track with an instrument loaded.
• Arm the track.
• Hit Record on transport. Play your MIDI controller (USB or on-screen keyboard).
• Notes captured in real time with velocity, timing, pitch wheel, mod wheel.

Step Recording (For Precision)

• For melodies that are hard to play in real time on a phone, use step input.
• Open piano roll → enable step mode → set note length (1/4, 1/8, 1/16, 1/32) → tap each pitch on the on-screen keyboard or play on USB controller → notes land at the current cursor position, cursor advances one grid step per note.
• Slow but precise. Build melodies note by note without playing them at speed.

The Step Sequencer Beat Maker

• Add a Drum Pattern track (or convert a MIDI track to drum pattern).
• The step sequencer opens — 16 steps per row by default, rows for kick/snare/hat/clap/percussion.
• Tap squares to add hits. Visual programming, no rhythm playing skill required.
• Per-step velocity: long-press a step → velocity slider appears.
• Swing: project-level swing setting affects step timing.
• Mute groups: kick and clap on the same step? They play together. Hi-hat closed and open on the same step? Set them as a mute group so closed hat is silenced when open hat plays — the proper hi-hat choke behavior.

6. The 2D & 3D Spectrum Analyzer (Pro Feature)

This is one of the main reasons to choose n-Track Pro over the free tier. Every audio track has access to a full EQ with integrated 2D AND 3D Spectrum analyzer — plus a chromatic tuner. No other Android DAW gives you 3D spectrum visualization at this level.

Opening the Spectrum Analyzer

• On any audio track, tap the FX slot → add the n-Track Parametric EQ.
• The EQ window opens. At the top, look for the spectrum view toggle.
• Switch between 2D mode (traditional frequency curve, horizontal axis = Hz, vertical = dB) and 3D mode (waterfall view, frequency + time + amplitude).

Reading the 2D Spectrum

• Horizontal axis: Frequency, 20 Hz on the left to 20,000 Hz on the right.
• Vertical axis: Amplitude in dB. Tall = loud at that frequency; flat = quiet.
• Updates in real time as audio plays. You're seeing the frequency content of the sound as it happens.
• Identify peaks (dominant frequencies), notches (missing ranges), and overall tonal balance.

Reading the 3D Sonogram

• The 3D view shows TIME on one axis, FREQUENCY on another, AMPLITUDE as height.
• You can ROTATE the view by dragging — examine the audio's "frequency landscape" from different angles.
• Zoom in by pinching the 3D view.
• What this is unique for on mobile: spotting resonance build-ups that occur over time but aren't obvious in a static 2D snapshot. The 3D waterfall shows you the history of the frequency content.

Practical Uses on Mobile

• Vocal recording check: Record a vocal on your phone. Open the spectrum. See if there's a fan or AC hum baked into the recording (it'll show as a fixed-frequency line). EQ notch it out before mixing.
• Bass clarity in a beat: Solo the bass + 808 → spectrum shows overlap zones. Carve one or the other to give them separation.
• Mix balance check: Put the spectrum on the master bus. See if the mix is bass-heavy, mid-heavy, or treble-heavy at a glance.
• De-essing: Vocal sibilance shows as 5-8 kHz spikes. Spot it visually, EQ down at that frequency.

The Built-In Chromatic Tuner

• n-Track Pro on Android also ships a built-in chromatic tuner.
• Insert on a track receiving an instrument signal (guitar, bass, vocal).
• The tuner shows the current pitch in real time — note name, cents-off, cents indicator showing flat/sharp direction.
• Useful for tuning a guitar before recording, or checking a vocalist's pitch accuracy on a recorded take.

7. Looping — Patterns, Sections, and Tracks

Transport Loop

• Tap the Loop button on the transport. Two loop markers appear in the timeline ruler — drag to set start and end of the loop region.
• Hit Play → playhead bounces between the markers indefinitely.

Pattern Loops (Step Sequencer)

• While editing a drum pattern in the step sequencer, the pattern loops continuously — you hear it repeat while you add hits.
• Patterns can be assigned to specific bars in the arrangement, so verse and chorus can have different patterns.

Clip Looping

• Tap an audio or MIDI clip → drag the right edge to extend.
• The clip auto-repeats — same content cycles cleanly within the extended bar count.
• Drag a 4-bar drum loop to 32 bars = 8 repetitions of the same content.

Independent Track Lengths

• Every track's clips are independent. Drums can span 32 bars; bass only 16; pad only the chorus.
• The absence of a clip = silence on that track at that point in time.
• Use this for arrangement — instruments enter and exit by where their clips are placed.

Cycle Recording on MIDI

• Set transport loop → arm a MIDI track → record. Each cycle pass either replaces or adds to the previous (configurable in Settings).
• Add mode = great for layering drum hits one element at a time (kick this pass, snare next pass, hat the pass after).

8. Mixing & Effects on Mobile

The Mobile Mixer

• Swipe or tap to open the mixer view. Channel strips for every track.
• Per channel: volume fader, pan, mute, solo, FX slots, aux sends.
• Pro tier: Group channels and Aux channels supported.
• Master bus on the far right with master FX slot and master fader.

Built-In Effects

n-Track Studio Pro for Android ships with:

• Parametric EQ with 2D/3D Spectrum (covered above).
• Compressor — threshold, ratio, attack, release.
• Reverb — multiple algorithms, decay/mix/damping.
• Echo / Delay — time, feedback, mix. Tempo-syncable.
• Chorus / Flanger / Phaser — modulation effects.
• Tremolo — amplitude modulation.
• Pitch Shift — formant-preserving pitch shifting.
• Distortion — overdrive and saturation.
• Compressor — full-featured dynamics.
• Denoiser — spectral noise reduction.
• Lo-Fi — bit-crushing, sample rate reduction.
• DynamicEQ — EQ band gain controlled by signal level.
• Arpeggiator — MIDI arpeggiator effect.
• Convolution Reverb — real-room impulse responses.
• Tube Amp — analog warmth.
• Limiter — for the master bus.
• Guitar Amp / Bass Amp — full amp simulations.
• VocalTune — pitch correction (auto-tune style).

VocalTune Workflow

• Record or import a vocal track.
• Add VocalTune as a track insert effect.
• Set the key/scale of your song.
• VocalTune corrects pitch in real time as the track plays — snapping notes to the chosen scale.
• Adjust strength — 100% for hard auto-tune effect (T-Pain style), 30-50% for gentle correction that sounds natural.

Send Effects via Aux Channels

• Add an Aux channel. Insert a reverb or delay on the aux.
• On individual tracks, raise the aux send knob → tracks send their signal to the aux for shared processing.
• Saves CPU (1 reverb instance vs 12 individual ones) and creates cohesive ambient space.

Automation

• Long-press any parameter (fader, pan, FX knob) → Write Automation.
• Play the project, move the parameter — n-Track records the movement.
• Draw automation directly on the timeline by enabling envelope view for any track.
• Automate volume rides, filter sweeps, pan movement, plugin parameter changes.

9. The Vocoder Workflow on Android

n-Track Studio Pro on Android doesn't have a built-in vocoder. The desktop workaround is to host a third-party VST vocoder plugin — but Android doesn't support VST plugin hosting in the same way. So the mobile vocoder workflow is different. Here's how I actually do it.

Option 1 — Use VocalTune Aggressively (T-Pain Auto-Tune Method)

Not technically a vocoder, but the perceptual sibling. Modern hip-hop vocoder-adjacent sound is often heavily-applied auto-tune rather than a true vocoder.

• Record your vocal on an audio track.
• Add VocalTune as an insert.
• Set the key/scale of your song.
• Crank the strength to 100%.
• Result: that hard pitch-snapping, robotic vocal sound that defined modern rap and trap.
• Add a touch of chorus/flanger after VocalTune for the "wide robotic" character.

Option 2 — IAA / Inter-App Audio With a Vocoder App

• n-Track Studio Pro on Android supports inter-app audio routing in limited form.
• Install a standalone vocoder app on your phone (search "vocoder" in Play Store — there are free and paid options).
• Route audio between n-Track and the vocoder app using Android's audio routing.
• This is more complex and your mileage varies depending on the specific vocoder app you find.

Option 3 — Bounce to WAV, Process Externally, Reimport

• Record your vocal in n-Track. Bounce the vocal track to a WAV file.
• Open a dedicated vocoder app (or use a desktop vocoder, then transfer back).
• Process the WAV through the vocoder.
• Import the vocoded WAV back into n-Track as a new audio track.
• Mix in with the rest of the project. Less elegant than real-time processing but reliable.

Option 4 — Use Pitch Shift + Heavy Effects for the Robot Voice

Without a vocoder plugin, you can approximate the robotic vocal sound using effects chains:

• Record vocal. Add Pitch Shift effect → shift down by 5-7 semitones (formants drop too — deeper, more menacing).
• Add a heavy chorus or flanger on top for the "metallic shimmer" character.
• Add light distortion or overdrive for grit.
• Layer the processed version with the original at lower volume for intelligibility.
• Result: not a true vocoder, but a recognizable "robotic processed vocal" character that fits the same musical contexts.

10. Exporting — Sharing & Stems

Mixdown Export

• From the menu → Export → Mixdown.
• Choose format: WAV (lossless), MP3 (compressed for sharing), FLAC (lossless compressed), M4A.
• Bit depth: 16-bit for streaming/CD, 24-bit for higher quality archive.
• Sample rate: match project (44100 or 48000 typically).
• Export range: full song or set custom start/end markers.
• Output destination: device internal storage, SD card if mounted, or share directly to apps (Drive, Dropbox, email).

Stem Export

• Solo each track individually → export → repeat for every track.
• Result: one WAV per track for use in desktop DAW final mixing.
• Useful for the "track on phone, mix on desktop" workflow.

MIDI Export

• Export → MIDI File → saves all MIDI tracks as one standard .mid file.
• For collaboration, sharing patterns, or moving phone work to desktop DAW.

n-Track Project (Cross-Platform)

• Export → n-Track Song File (.sng).
• Compatible with desktop n-Track Studio — open the same project on Windows/Mac/Linux and continue editing with full plugin access.
• This is the killer feature for the phone-to-desktop workflow. Same project file format. Same n-Track ecosystem.

Songtree Upload

• Built-in Songtree integration. Upload mixes directly to the Songtree online community.
• Free unlimited mixdown storage on Songtree (a perk of being inside the n-Track ecosystem).
• Collaborate with other Songtree musicians — they hear your mix, add their parts in their n-Track Pro, push back to you.

11. Touch Gestures & Mobile-Specific Workflow

Touch gestures are consistent across the app. Learn them once, use them everywhere.

12. Pro Tips — The Kokumo Method

• The phone is the sketchpad, the desktop is the lab. n-Track Pro on Android is one of the few mobile DAWs where the project file is fully compatible with the desktop version. I sketch beats in n-Track Pro on my phone in Indiana — at coffee shops, in transit, on walks. When the idea is solid, I move to the desktop n-Track for finalizing with full VST access. Same DAW, two scales of work. Other producers use Ableton on desktop and FL Mobile on phone — the platforms don't speak to each other. n-Track Pro is the rare bridge.
• Use the 2D/3D Spectrum during mobile recording. When I'm recording vocals on the phone (which I do constantly — phone mic is fine for sketch demos), I add the spectrum analyzer to the vocal track right away. I can SEE if there's room hum or fan noise in the recording before I commit to using the take. This eliminates 30 minutes of headphone listening trying to identify a mystery low-frequency build-up.
• Step sequencer for drums, piano roll for melody. Same principle as any DAW. The step sequencer is fast for repetitive percussion. The piano roll is precise for pitched musical content. Don't try to program melodies in the step sequencer or you'll fight it.
• Build a MIDI library before you need it. Spend an hour one weekend dumping every useful MIDI file you can find into a "MIDI Library" folder on your phone. Drum patterns from packs, chord progressions, melodies from old projects. Every n-Track Pro session afterward, your library is one tap away in the import dialog. The producers who ship fast are the ones with prepared content.
• VocalTune is your vocoder substitute on mobile. Cranked to 100% with chorus added after, VocalTune approximates the robotic vocal sound that most listeners associate with "vocoder." It's not technically the same effect, but it fills the same emotional/musical role. Embrace it. The modern hip-hop/trap vocal sound is auto-tune, not classic vocoder.
• USB OTG audio interface for serious recording. The built-in phone mic is fine for sketches but no good for releases. Get an inexpensive USB OTG audio interface (Behringer UMC22, Focusrite Scarlett Solo with proper adapters) → plug into the phone → record at near-desktop quality through n-Track Pro. The DAW supports class-compliant USB audio interfaces. This bypasses 95% of the phone's audio limitations.
• Convolution Reverb on a phone — the underrated luxury. n-Track Pro includes the convolution reverb on mobile. You can load impulse responses from real spaces. Free IR packs are everywhere online. This is genuinely a feature most $300 desktop DAWs don't have at this quality. On a phone. Use it.
• Songtree for collaboration. When I have a friend who's also a producer and we want to swap song parts, Songtree handles it cleanly. I upload my n-Track Pro mix → they download → add their parts in their own n-Track → push back. No emailing 30 MB project files around.
• Group tracks aggressively. Pro tier supports group channels and auxes. Use them. Group all your drums to a Drums Group, all your synths to a Synths Group. Apply collective processing — a compressor on the drum group glues the kit together. Apply collective volume rides for arrangement dynamics. Mixing on mobile gets cleaner the moment you stop treating every track as fully independent.
• The Italian small-team appreciation. n-Track is made by a tiny Italian team — the same team since the 90s. Mobile and desktop come from the same hands. There's something to be said for software that comes from one focused team rather than a giant corporate division spread across continents. When you buy n-Track Pro, you're supporting a real small business making a real tool. That matters to me. It should matter to anyone who values craft over scale.