🎹 Arranger Keyboard – User Guide

Turn your Android device into a professional music workstation! Arranger Keyboard lets you play piano, Soundfont (SF2/SF3) instruments, Yamaha styles (STY/PRS), and KORG KMP sounds with accompaniment, recording, and MIDI support.

 

🌟 Key Features

• Realistic HD instruments with dual voice

• Play Yamaha STY styles with automatic accompaniment

• 127 built-in voices (GM + oriental)

• Load SF2/SF3 and KMP instruments from your device

• Record and mix instruments and styles

• Play and accompany MP3, WAV, AAC, and MIDI songs

• MIDI support: Bluetooth (BLE) and USB keyboards

• Quarter-tone scales (maqams) for Arabic, Turkish, and Greek music

• Reverb, Equalizer (Bass/Mid/Hi), and mixer volume control

• Modulation effects and Solfeggio frequencies

• New drum kits and instruments (Kanun, Sitar, Santoor, Tar, Guitar, Oud, Ney, etc.)

• Instrument search, filtering, and chord sets
   

🖥️ Main Interface Overview

Display & Navigation Area

• Central Display Screen: Shows current settings, tempo, menu options, and file browsers

• Menu Navigation: MenuNext / MenuPrev buttons to cycle through options

• Parameter Control: Plus / Minus buttons adjust values; MenuReset returns to defaults
   

Sound Source Selection

Instrument Banks:

• MAIN: Built-in 127 instruments

• KMP: KORG KMP format support

• SF2: Soundfont 2.0/3.0 support

Instrument Types:

• VOICE: Select melody instruments

• DRUM: Choose drum kits

• DUAL: Layer two instruments

• KIT1 / SF2KIT: Switch drum kit options
   

Style & Accompaniment Section

Style Categories:

• WORLD: World music styles

• ORIENT: Oriental music styles

• USER: Your own loaded styles (STY, PRS)

• STYDIR: Browse external style folders

Accompaniment Control:

• ACC: Full accompaniment (drums + bass + chords)

• NOACC: Drums only

• CHORD: Open chord selection
   

Performance Controls

Style Variation Buttons:

• INTRO (A, B, C): Start with different introductions

• FILL IN (AA–DD): Insert transitions

• MAIN VARIATION (A–D): Change main patterns

• ENDING (A–C): Finish with different endings

Transport Controls:

• START / STOP: Begin or stop accompaniment

• REC / STOP / PLAY: Record and playback

• LIBRARY / FOLDER: Access saved songs and recordings

Keyboard & Navigation:

• Left / Right Arrows: Scroll keyboard

• Octave Buttons: Jump octaves

• Tempo Knob: Adjust speed (20–200 BPM)

• Modulation Wheel: Add pitch bend/expression

• ACCKEYS: Show/hide chord piano

• MIN+MAJ: Toggle chord types
   

🎶 Playing Instruments

Basic Instrument Selection:

• Select sound source: MAIN, KMP, or SF2

• Press VOICE for main melody instrument

• Optional: Use DUAL for layering

• Play on touch keyboard or MIDI controller

Using Drum Kits:

• Press DRUM for various kits

• Use KIT1 to cycle kit options

• Select SF2KIT for Soundfont-based kits
   

🥁 Using Styles (Auto-Accompaniment)

Basic Style Operation:

• ACC: Full band accompaniment

• NOACC: Drums only

• Choose style category: WORLD, ORIENT, USER

• START to begin playback

• Play chords on left side; accompaniment follows

• Use variation buttons for performance flow

Performance Workflow:

• Start with INTRO A–C

• MAIN VARIATION A–D for song sections

• FILL IN between sections

• ENDING A–C to finish

• START/STOP to halt playback anytime
   

📂 Loading External Sounds & Styles

SF2 Soundfonts:

• Download SF2 files to your device

• Tap SF2DIR → select folder

• Tap SF2BNK → choose a soundfont

• Select a voice and play

Yamaha Styles (STY / PRS):

• Download styles to folder

• Tap STYDIR → select folder

• Go to USER → choose style

• Use variation buttons A–D

KMP Instruments:

• Download KMP files to folder

• Tap KMPDIR → select folder

• Press KMP bank → choose voice
   

🎛️ Advanced Features

Microtonal Music Support:

• Quarter-tone scales (Arabic, Turkish, Greek)

• Adjust 1/9–9/9 of a note

• Save/load custom scales

MIDI Connectivity:

• Bluetooth and USB MIDI support

• Full MIDI messages including pitch bend and control changes

Recording & Playback:

• Record WAV performances

• Playback MP3, WAV, AAC, MIDI

• Browse recordings via FOLDER

Sound Shaping:

• Reverb, Equalizer, Polyphony Control

• Separate instrument and style volumes
   

💎 Pro Version Features

• Unlimited tracks and recording length

• Higher polyphony

• Additional premium Soundfonts & Styles

• Advanced mixing tools and presets

• Ad-free experience

• Priority support
   

💡 Pro Tips

Performance Optimization:

• Use wired headphones

• Close background apps

• Adjust polyphony

• Keep device charged

Workflow Efficiency:

• Save favorite voices/styles

• Use DUAL voice mode

• Create setlists with styles and instruments

• Organize SF2, STY, KMP files

Recording Best Practices:

• Monitor recording levels

• Use a metronome

• Record sections separately

• Balance volumes
   

📁 File Locations

• Recordings: Music/ArrangerKeyboard/

• App Data: /Android/data/com.audiosdroid.arrangerkeyboard/files/

• User Content:

  • UserSF2, UserStyles, UserKMP folders
     

❓ FAQ & Troubleshooting

Audio Issues:

• No sound: Check volume, headphones, app permissions

• Latency: Use wired headphones, close apps, reduce polyphony

Style & Accompaniment:

• Style not responding: Ensure ACC is active, play chords on left, check MIN+MAJ

• Files not showing: Confirm correct directory and format

MIDI Connectivity:

• USB: Try another OTG cable

• Bluetooth: Re-pair

• Check permissions

App Performance:

• Crashes: Restart, update, clear cache, reboot

• App does not launch: Ensure all audio and storage permissions are granted

Recording Problems:

• Adjust levels, balance volumes, check storage
   

🔐 App Permissions & Privacy

• Storage Access: Needed to playback/record music, save/load SF2, STY, KMP instruments. Appearing as “photos” is system labeling; no access to personal photos

• Phone / Call Status: Collects device specs for analytics; no access to calls or contacts

• Location: Optional anonymous data for ads/music suggestions; not required

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