From one idea
to six projects you can change.

A request can be a style (“liquid drum and bass”), a mood (“melancholic, late at night”), instruments (“with a warm piano”), a tempo or a key, or an image that suggests all of these. English and Italian both work. Under More conditions you can set tempo, key, energy, density and the parts you want or don’t want.

Before composing, HTC shows its reading of your request: the style it will use, what it assumed, and what it cannot do (for example vocals or a full orchestra). Nothing is silently replaced.

Every request produces one Set: four interpretations that keep your brief and two HTC Extreme takes that push it further.

• Faithful — the request as the style tends to play it.
• Groove-led — another drum pattern and bass feel carry the song.
• Harmonic & spacious — another mode, richer chords, more space.
• Melodic — a lead idea in front.
• Extreme · rhythm & form — the rhythm and the form rebuilt, bolder choices.
• Extreme · harmony & timbre — harmony and sound re-imagined.

Each one is a complete song: a form in sections, parts written together (drums, bass, chords, pads, lead and the parts that answer them), performance, instruments and a mix with a master.

The six projects play straight away in your browser — they are rendered live from the project, not downloaded as audio. Compare two of them side by side, keep favourites, try another Music Model on the same request.

Open any project in Studio. You can edit notes and drum steps, change chords, move and vary sections, mute, solo and rebalance parts, change instruments and their settings, draw or record automation, play notes from your computer keyboard or a MIDI controller, adjust the mix and the master. Every change is a revision: undo it, compare it, or branch a new version.

Some Studio actions ask HTC to compose new material — regenerate a part, add a part, vary a section, new takes. Those count as a request, like a new Set.

Everything you generate is kept in the Library: Sets, songs and their revisions, favourites and collections. Without an account the Library lives in this browser. A free account (your e-mail and a one-time code — no password) keeps a private copy on the server, so you find your projects on your other devices.

Export renders the song in your browser as WAV or MP3, the whole mix or separate stems.

After a Set, HTC invites you to share one of the six with the beta catalogue — only if you want, and only the ones you choose. You see exactly what becomes public before sending it, and the team listens before it appears.

Composition runs on HTC’s server: that is where the music models live, and where requests are counted. Listening, editing, mixing and export run in your browser, on your computer.

• Styles today: house, techno, breakbeat, drum and bass, trip-hop, dub, downtempo, ambient — and mixes of them. No vocals, orchestras, live bands or song lyrics.
• The newest Music Model is experimental: results vary, and we are still listening to them ourselves.
• Tested in recent desktop and Android Chrome. Other modern browsers should work; if yours doesn’t, tell us.
• Studio is built for a large screen; on a phone you can listen, compare and make simple changes.
• HTC changes often. What changed, version by version, is on What’s new; your saved projects keep the model and sounds that made them.