Is YuE2 free?
The code and model weights are publicly available. Running them still uses your hardware or paid compute. The authors link to a free hosted demo, whose capacity and conditions are set by the host. Publicly downloadable weights are not a blanket grant for every commercial use; see the license breakdown.
Which singing languages can I try?
The research demo includes Chinese, English, Japanese, Korean, Russian and Spanish examples. Describe the singing language in Style and write Lyrics in that language. Demonstrated languages do not imply equal pronunciation quality across every accent or style.
Can I make instrumental-only music?
The official workflows covered here focus on complete songs with vocals and accompaniment. We have not verified a reliable instrumental-only preset. If you experiment with an instrumental style instruction, treat it as a request rather than a guarantee that the output will contain no voice.
What about YuE2 LoRA training?
Training tools and adapters need their own compatibility checks. Confirm the base checkpoint, training implementation and license before using a community tutorial. This guide’s standard installation covers inference; it does not include a verified LoRA training recipe.
Why does a song stop early?
A maximum duration is an upper limit, and the model can end a song earlier. It can also hit a token limit. Inspect result.json and truncation flags in the official pipeline, then listen to the ending. Try a shorter lyric structure before increasing multiple generation limits.
Why did the same prompt produce a different song?
Sampling is part of generation. Save the seed, model revisions, runtime version and effective settings if you want to compare runs. Even a fixed seed is not a promise of identical audio across different environments.
Where should I look for a fix?
For a native ComfyUI problem, check its version, template and startup log. For the Python pipeline, consult the YuE repository’s issues. Include your platform, GPU, package versions and a minimal request; remove private lyrics and file paths before posting.
Sources & further reading
Documentation checked against the linked sources. We have not benchmarked generation on our own hardware.