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HeartMuLa

HeartMuLa is a dual-stage generator: an autoregressive music model (MuLa) and a codec flow solver, built for prompt-plus-tag conditioning.

One task, generate.heartmula, on the create page, using the guided prompt builder. Miso turns your chips into the comma-separated tag list that this family wants.

Multilingual singing, conditioned on the lyrics you provide.

Option Default Does
text High level description of the song
tags Comma-separated descriptors. The runtime wraps these in tag tokens
lyrics Lyric text matching the intended structure
duration_sec 120 Target length in seconds
infinite_mode Bounded chunking for long songs
codec_guidance_scale 1.25 Codec CFG scale
guidance_scale 1.5 MuLa generator CFG scale

Keep the description direct and put the detail in the tags.

text: upbeat summer anthem
tags: electropop, bright synths, four on the floor, female vocals, energetic, 128bpm

Tempo goes in the tags for this family rather than in a separate field. Miso handles that translation from the guided form, so 128bpm in the builder lands in the tag list rather than as a bpm option.

Miso sends heartmula.mem_saver=true, which releases resident graphs between token generation and codec decoding.

The default duration_sec of 120 is high compared to the other families. If you are on a smaller card, bring it down before trying anything else.