AI Music Generator With Stems, MIDI and BPM Tags

Aleatoria is an AI music generator that writes a complete track from a text prompt — a sung song or an instrumental — and gives you the files a producer needs: a WAV or 24-bit FLAC master, an MP3, the BPM written into the file (and the key, on synthesizer tracks), and stems and MIDI where the engine can make them. Every plan downloads without a monthly cap.

Create a song from this templateOpens the studio with this template filled in. Nothing is generated until you press Generate.

What does the AI music generator make?

You describe the track ("bright summer pop with a female vocal, catchy chorus") and choose a length. Two kinds of engine do the work:

The AI model (ACE-Step 1.5) renders a finished-sounding recording, with vocals and lyrics if you want them, up to 10 minutes long. One song of up to 4 minutes costs 5 credits.
The synthesizer composes the notes itself and renders each instrument separately. It costs 0 credits, needs no GPU, and finishes in seconds — but it does not sing.

Which files do I get?

File	AI model	Synthesizer
WAV and 24-bit FLAC master (44.1, 48 or 96 kHz)	yes (the model renders at 48 kHz; 96 kHz is resampled)	yes, rendered natively
MP3 320 kbps	yes	yes
BPM and key in the file tags	the BPM when it was measured; no key	yes
Stems	four AI stems separated from the mix — vocals, drums, bass, other (Studio, Pro)	one per instrument, rendered natively, every plan
MIDI	with the AI stems, Studio and Pro	the composition itself, every plan

Every file is labelled as AI-generated in its metadata, as the EU AI Act requires.

How much does it cost?

Plans start with Basic at €2.99 a month (€2.49 a month billed yearly) for 100 credits — about 20 AI songs — with commercial use, unlimited downloads and up to 30 synthesizer tracks a day. Studio costs €9.99 a month for 500 credits (about 100 songs), Pro €29.99 for 1,500 credits (about 300 songs). Prices include VAT. There is no free plan: without an account you can hear a 30-second synthesizer trial on the trial page. See the price list.

How is this different from Suno?

Suno's vocals are strong and its plans include 2,500 (Pro) or 10,000 (Premier) credits a month. As of 3 October 2026, Suno's Pro plan ($10 a month) also caps downloads at 20 songs a month and Premier ($30) at 60, with extra downloads for sale; the Free plan has no monthly downloads, only up to 7 trial downloads in total. On Aleatoria every plan downloads without a monthly cap, and the files carry BPM and key and, for DJs, a beat grid and cue points whenever the beat could be measured reliably. More in the Suno comparison.

FAQ

Is the AI music generator free?

No — there is no free plan. Without an account you can hear a 30-second synthesizer preview on the trial page (3 a day, deleted after 24 hours, nothing to download). Plans start with Basic at €2.99 a month: 100 credits (about 20 AI songs), commercial use and unlimited downloads. Studio and Pro add more credits.

Can it make songs with vocals?

Yes. The AI model sings your lyrics, or writes them for you. The synthesizer makes instrumentals only.

Can I use the music commercially?

On Basic, Studio and Pro, yes: you get a non-exclusive, perpetual licence to use the tracks you made while subscribed, and it stays after you cancel. Details are in the terms.

How long does one track take?

The synthesizer takes seconds. The AI model usually takes one to two minutes; the first track after a quiet spell can take up to about five minutes while a GPU starts.