Model reference · open weights
HeartMuLa-oss-happy-new-year is an open-weight audio or speech model from HeartMuLa. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.
Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.
What it is
| Maker | HeartMuLa |
|---|---|
| Type | Audio & music |
| Task | Music / audio |
| Parameters (lead) | 3.9B |
| Released | 2026-02-13 |
| Popularity | 2k downloads / month |
| Licence | Open weights |
About
The best open-sourced music generation model in terms of lyrics controllability and music quality.
Check our github repo https://github.com/HeartMuLa/heartlib for a quickstart and local deployment of HeartMuLa.
If you find HeartMuLa useful, please cite:
@misc{yang2026heartmulafamilyopensourced,
title={HeartMuLa: A Family of Open Sourced Music Foundation Models},
author={Dongchao Yang and Yuxin Xie and Yuguo Yin and Zheyu Wang and Xiaoyu Yi and Gongxi Zhu and Xiaolong Weng and Zihan Xiong and Yingzhe Ma and Dading Cong and Jingliang Liu and Zihang Huang and Jinghan Ru and Rongjie Huang and Haoran Wan and Peixu Wang and Kuoxi Yu and Helin Wang and Liming Liang and Xianwei Zhuang and Yuanyuan Wang and Haohan Guo and Junjie Cao and Zeqian Ju and Songxiang Liu and Yuewen Cao and Heming Weng and Yuexian Zou},
year={2026},
eprint={2601.10547},
archivePrefix={arXiv},
primaryClass={cs.SD},
url={https://arxiv.org/abs/2601.10547},
}
If you are interested in HeartMuLa, feel free to reach us at heartmula.ai@gmail.com
From the published model card. Full card on the HuggingFace links in the sidebar.
Using it via the API
Once AxForge deploys heartmula-oss-happy-new-year for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (heartmula-oss-happy-new-year below is illustrative; you get the exact model name on deployment.)
$ curl -sS https://api.axforge.ai/v1/audio/transcriptions \ -H "Authorization: Bearer $AXFORGE_API_KEY" \ -F model="heartmula-oss-happy-new-year" -F file=@audio.mp3
Create an account — your API key is available in the console. 5M tokens/month currently included with every new account at launch.