Music prompt
Describe a track in French: style, mood, instruments, tempo, key, constraints and duration. BotSong builds an editable multitrack arrangement.
From idea to multitrack song
Compose. Arrange. Export.
BotSong turns a music description and your inspiration MIDI files into a complete project you can structure, reharmonize, mix, audition and convert to MIDI or karaoke.
●Coming soon onApp Store
The download will be activated as soon as the official release is live.
One lifetime purchase29,99 €
Create everything for free. Projects, size, duration, editing, playback and saving are unrestricted. Without purchase, only exported .mid and .kar files are truncated to 15 seconds. The €29.99 one-time lifetime purchase removes this limit—no subscription.
Complete studio
Everything BotSong can do
Every stage stays editable: generation, structure, notes, harmony, lyrics, mixing, projects and exports.
Multitrack composition
Generate piano, bass, drums, percussion, pads, synths, guitars, strings, brass, woodwinds, lead melodies and counter-lines based on the requested style.
Styles and harmony
Use many genres, major, minor and modal keys, cadences, extended chords, inversions, modulations, time signatures and local musical changes.
Inspiration MIDI
Import one or several MIDI files as a corpus. Adjust their weights, choose strict or free interpretation and preserve key, tempo, chords, added melodies or lyrics.
Song structure
Arrange intros, verses, choruses, bridges and custom sections. Edit the chord grid, subdivisions, repetitions and measure durations.
Detailed arrangement
See every track on a timeline, edit notes and velocities in the piano roll, add melodies, reharmonize and control global or local instrumental density.
Mixing and playback
Solo, mute and change track volume, balance vocals and backing, play through a General MIDI SoundFont, seek precisely and render WAV previews.
Lyrics and karaoke
Enter lyrics by section, split syllables across notes, force a word onto one note, align the vocal melody and use full-screen karaoke with a countdown.
Professional exports
Export multitrack Standard MIDI .mid, synchronized-lyrics karaoke .kar, WAV audio and JSON song-structure/chord-grid files.
Project library
Create, name, save, reopen and export .botsong projects. Autosave and last-project restoration keep your work safe.
Safe editing
Undo/Redo history, preserved playhead position while editing and transformation tools that avoid destroying the source project.
On-device workflow
Algorithmic composition, editing, MIDI rendering and project management happen on the device. No BotSong account is required.
One purchase, not a subscription
The non-consumable product botsong_lifetime_unlimited_export unlocks full MID and KAR exports. Restore Purchases recovers access on another device using the same store account and platform.