A Spotify-Style Control Room for Local AI Music

What it does ACE-Step UI is a React and TypeScript frontend for the open-source ACE-Step 1.5 music model. It turns a local GPU into a browser-based studio for generating full songs with vocals or instrumentals, organizing tracks into playlists, and editing audio. The interface deliberately mimics Spotify, complete with a bottom player, waveform scrubber, and dark mode.

The interesting bit The project bundles a surprising amount of post-production tooling—stem separation via Demucs, audio trimming through AudioMass, procedural album art, and a music-video composer—so you rarely need to leave the app to finish a track.

Key highlights

• Generates songs up to 4+ minutes with structured lyrics, or pure instrumentals
• Custom mode exposes BPM, key, time signature, and duration; reference-audio uploads clone or transform styles
• “Repainting” regenerates specific sections, and seed control locks in reproducible results
• SQLite-backed library with search, likes, playlists, and LAN access for other devices on your network
• Real-time generation queue with live progress tracking

Caveats

• Requires an NVIDIA GPU; 4 GB VRAM is the floor, while LLM-powered “Thinking Mode” auto-disables below 12 GB
• The UI is a polished wrapper around ACE-Step 1.5, which must be running separately via its Gradio API
• Pexels-backed video generation still needs an internet connection despite the fully-local pitch

Verdict A solid choice for producers who want Suno-like output without subscription fees or cloud lock-in, provided they have the NVIDIA hardware to run the backend. Skip it if you are looking for a single, self-contained installer.