Solo developers and small teams usually face the same gap: stock game music sounds like stock game music, and a composer for every area is out of budget. AI generation fills one part of that gap, original source audio you can iterate on quickly. The other part, wiring music into the game so it reacts to what the player does, still happens in your engine or audio middleware, as it always has.
This guide covers what to generate, how to turn one track into layers, what it costs on Autunes, and where the limits are.
Short loops vs full themes
Short Form makes 15, 30 or 60 second pieces for 2, 3 or 5 credits. Its Game Background template is instrumental and marked loop-friendly, which suits menu screens, shops, puzzle rooms and idle loops. For area themes and boss fights, make a full song with the Instrumental only switch on; songs run up to 3 minutes on Free and Pro and up to 5 minutes on Creator.
Instrumentals loop more cleanly than sung tracks, and a vocal competes with dialogue and other game audio in your mix, so most game cues should have no vocals.
Prompts that describe the job, not just the genre
Tell the generator what the music is for. A cue that has to sit under exploration for ten minutes needs a different description from a thirty-second victory sting.
- Exploration: "ambient fantasy exploration, sustained pads, soft harp, no strong beginning or ending, calm, minimal percussion"
- Combat: "orchestral battle theme, driving taiko drums, aggressive brass, constant high intensity"
- Indian setting: "mystical temple ambience, tanpura drone, bansuri, slow tabla, mysterious"
- Retro platformer: "chiptune-style upbeat loop, bright square-wave lead, fast tempo"
- Cosy sim: "lo-fi acoustic guitar and soft keys, warm, relaxed, loop-friendly"
Turning one theme into adaptive layers
Vertical layering, where several versions of the same music at different intensities play in sync and the engine fades between them, is a long-standing approach to adaptive game music. Stems give you those layers from a single generated track.
On Pro and Creator, Stems splits a song into six parts: vocals, drums, bass, guitar, piano and other, each a 256 kbps MP3. It costs 5 credits a song, takes about a minute for a four-minute track, and refunds the credits if it fails. An instrumental has no vocal stem; pads, synths and orchestral parts usually land in other.
- Calm layer: other plus piano, for exploration.
- Alert layer: add bass, for when enemies notice the player.
- Combat layer: add drums and guitar, or play the full mix.
- Import the stems into your engine or middleware as synchronised tracks and drive their volumes from game state.
More control: MIDI, extra layers and restyles
MIDI export, on Pro and Creator, gives you the notes so you can replay a melody with your own synths or sample libraries, transpose it, or build a music-box version for a menu. Layer Studio, also on Pro and Creator, adds one new instrument part to a song for 5 credits, useful for an extra percussion layer that only plays in combat. Remix (Pro and Creator) restyles a theme into another genre while keeping its character, for example an overworld theme reworked as a tense night version. Creator can also extract any single instrument.
Making loops seamless
Loop-friendly cues are a good start, but no generator guarantees a sample-accurate loop. Plan to finish loops in your audio editor or engine:
- Find a loop point at the end of a bar, not in the middle of a phrase.
- Cut at zero crossings and add a very short crossfade to avoid clicks.
- Watch reverb tails: if the end rings into the start, the seam shows. Many engines let you overlap the tail with the next loop.
- Export final loops as uncompressed audio from your editor for the build; Creator also downloads lossless FLAC.
Budget and licence
A rough Pro budget: Pro is ₹599 (about US$7) for 30 days with 300 credits. Ten area themes on Zori5.5 XL at 15 credits is 150, stems for all ten is 50, and twenty 30-second cues is 60, for 260 credits in total. Plans are 30-day passes that do not auto-renew, so you can buy one during the music sprint and stop.
Songs made on a paid plan can be used commercially, including in a game you sell, with no royalty and no credit to Autunes required. Free-plan songs are for personal use unless you buy the ₹9 single-song licence. Paid plans also add creation proof, a SHA-256 fingerprint and creation time for each song, which helps if a store or platform ever asks where your music came from.
Honest limits
- Separation is very good on clean mixes, but a little bleed between stems is normal; test layers in context.
- Stems are a fixed set of six, so two instruments in the same range may share a stem.
- AI music gives you source material, not an implementation. Transitions, stingers and state logic are design decisions you still make.
- Generated tracks vary from take to take, so lock a theme before you build layers from it.