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StepAudio 3 Music Studio: AI music in the browser
StepFun released a browser-based music studio — describe the genre and mood, get a track; also arranges vocals and remixes existing audio.
StepAudio 3 Music Studio is a browser-based application by StepFun (the stepfun-ai team), a Chinese AI company that focuses on audio models. According to the application description, it allows users to 'create songs, arrange vocals, and remix music.' The user describes a genre and mood, and the model generates a track. It is also possible to add a vocal arrangement on top of a generated piece or remix an existing recording. The application runs entirely in the browser via Gradio and requires no installation. It is publicly available on Hugging Face Spaces at no cost.
Why a vibe-coder should care
For content creators who need original music for videos, podcasts, or other media — this is a direct, free option that works in the browser without any setup. StepFun is a serious AI company, not a hobby project. I would use it for background tracks where the goal is something that fits the content but is not someone else's copyrighted material.
How to install
Copy this and send it to your agent — Claude Code, Codex, any of them:
Open this space https://huggingface.co/spaces/stepfun-ai/StepAudio-3-Music — explain how to create a track, and help me write a prompt for my first try with atmospheric background music for a video.
No installation needed — runs entirely in the browser.
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