---
license: other
license_name: cc-by-nc-4.0-and-mit
license_link: LICENSE.md
library_name: onnx
tags:
  - forced-alignment
  - singing
  - lyrics-alignment
  - pitch-estimation
  - ultrastar
  - onnx
  - mirror
---

# UltraStar models (mirror)

**Unchanged copies** of models used by the UltraStar Creator Tool, kept here so the app keeps working if an
original repository goes away. The app loads the originals first and uses this copy only as a fallback, checking
every file's SHA-256 either way. **All credit belongs to the original authors** listed below. Nothing here was
trained or modified by the owner of this repository; models trained for the UltraStar Creator Tool are published
separately.

| Folder | Copy of | Version | License |
|---|---|---|---|
| `aligner/` | [tuneperfect/tunestudio-aligner](https://huggingface.co/tuneperfect/tunestudio-aligner) | `4c6edce202fae335e6239c09ea17ecddcf29b42e` | CC BY-NC 4.0 (non-commercial) |
| `fcpe/` | [tuneperfect/fcpe-onnx](https://huggingface.co/tuneperfect/fcpe-onnx) | `f99224c40e48c8c84fa9935ff2cc6c3e92ec6ccf` | MIT |

Each folder keeps the original model card (`ORIGINAL_README.md`) and, where there is one, the original license
(`ORIGINAL_LICENSE`).

## aligner/ — Tune Studio aligner

A CTC forced aligner for sung lyrics by [Tune Studio](https://github.com/ZerNico/tunestudio) (© Nico Franke):
[MahmoudAshraf/mms-300m-1130-forced-aligner](https://huggingface.co/MahmoudAshraf/mms-300m-1130-forced-aligner)
(by Mahmoud Ashraf, based on [Meta's MMS](https://huggingface.co/facebook/mms-300m)) fine-tuned on singing, plus
its syllable-start head.

| File | Bytes | SHA-256 |
|---|---|---|
| `aligner.onnx` | 1,262,284,621 | `597a1d775df8f7fe3c94310568751ef9253645b4d8cdf21bb7a3da1ab80225a1` |
| `boundary.onnx` | 2,570,198 | `c408211885ef43a867cfb107e52eaa7399a3df84985764c578a72c8949252736` |

**License: CC BY-NC 4.0**, inherited from the MMS base model: free for **non-commercial** use, with attribution
to the authors above. See https://creativecommons.org/licenses/by-nc/4.0/

## fcpe/ — FCPE pitch estimator (ONNX)

An ONNX export of [FCPE](https://github.com/CNChTu/FCPE) by CN_ChiTu, made by Tune Studio.

| File | Bytes | SHA-256 |
|---|---|---|
| `fcpe.onnx` | 47,805,126 | `09c5717de92ddd5e4efc5177104f973d205102b2b5596ba91eeb19711cb90d12` |

**License: MIT**, like the original (see `fcpe/ORIGINAL_LICENSE`).