ACE-Step 1.5 review: local music generation tests

Explore ACE-Step 1.5 song controls, a custom web UI and genre tests on an RTX 5090, including duration mismatches and reported VRAM use.

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ACE-Step 1.5 gets a hands-on music generation review through a simplified browser interface. The presenter says Claude built the custom UI from the repository's Python server script and endpoints, and shares a GitHub Gist link in the description. The tests focus on generating songs rather than installation or the bundled interface's cover and source-sampling features.

The session uses the larger model on an NVIDIA GeForce RTX 5090 supplied by NVIDIA. The presenter reports roughly 24 GB of VRAM use out of 32 GB available. He cites a 4 GB minimum for a smaller variant but does not test it. Repository speed claims for the A100 and RTX 3090 are also quoted rather than measured here; support beyond CUDA hardware remains unconfirmed in this review.

Examples turn Python code, office conversation and mathematical definitions into lyrics. Controls include BPM, duration, vocal language, key, time signature and batches of four variations. Genre tests cover funk, death metal, easy listening and choir, with mixed results: the presenter praises several songs but rejects the initial spy-movie attempts.

Prompt enhancement can alter lyrics, and one simple-mode request for 60 seconds produces 184 seconds of audio. The session gives viewers concrete local AI music examples and a look at output variability, rather than a controlled comparison with Suno or Udio.