Riffusion Fuzz

What Flow Music does well is refuse to be a single prompt box. The Producer is the product's center of gravity: you brainstorm lyrics and arrangement in chat, and the docs show four separate levers — Progress, Instructions, Flows (custom slash commands), and Memories — that determine how much the producer carries between sessions. Being able to switch the producer's model between Instrument, Ghostwriter, and Producer means you can dial the assistant's stance rather than accepting one default. That is more control than most AI music tools give you, and it is the kind of control that matters when you are drafting twenty song ideas and want the assistant to stop suggesting the same chord progression. The output side is grounded in named Google models rather than vague claims: Lyria 3.5 for the songs, the latest Veo model for music videos. Video is the second real differentiator — directing characters and aesthetics yourself without a camera crew is a use case that music tools priced for hobbyists generally do not touch. Vibe-code plus the playable piano at flowmusic.app/space/piano is a third, narrower track for tinkerers; the help center even documents a topic for using Flow Music instruments and effects in your DAW. Where it gets thin is in the pipeline story. The seed notes flag that the sources do not establish API access, MIDI support, VST support, offline use, or a desktop/mobile app, and the scrape I have does not answer those either — so treat them as unverified rather than absent. Concurrent generation caps scale 2 / 8 / 12 / 16 across Free to Member, and credits are consumption-based: Starter is 3,000 monthly credits (~600 songs), Plus is 10,000 (~2,000 songs), Member is 30,000 (~6,000 songs), each with daily top-ups. If your workflow is "generate forty takes an hour," the cap and the credit meter both bite. The "Get Credits" top-ups are only purchasable on paid plans while the subscription is active, which is worth knowing before you plan a burst around them. Access is the other practical fence. You need a verified 18+ age, a supported region, and a Google Account, and the docs state the app requires authorization every time you log back in. If you are signing in and out across a shared machine, that is friction you will feel daily. Where it fits: musicians sketching full songs fast, creators who need a bespoke soundtrack plus a matching video from one bill, and hobbyists who never wanted to learn a DAW. Where it does not: anyone whose work has to live inside an existing DAW session with MIDI and VST wiring, teams that need an automated music pipeline, and high-volume generators who will burn through credits. Choose Flow Music for the chat co-producer and the video track; look elsewhere if the pipeline plumbing matters more than the drafting.