# IFF Musical Score — file signature 46 4F 52 4D ?? ?? ?? ?? 43 4D 55 53 at offset 0 any

For IFF Musical Score, hex signature is 46 4F 52 4D ?? ?? ?? ?? 43 4D 55 53; offset is 0 any; extension is cmus mus iff, verified against its source on 2026-09-22.

- **Hex signature:** 46 4F 52 4D ?? ?? ?? ?? 43 4D 55 53 _(verified: appears in the quote below)_
- **Offset:** 0 any _(verified: appears in the quote below)_
- **Extension:** cmus mus iff _(verified: appears in the quote below)_
- **Format:** IFF Musical Score _(verified: appears in the quote below)_

## What the source says

> 46 4F 52 4D ?? ?? ?? ?? 43 4D 55 53 | FORM????CMUS | 0 any | cmus mus iff | IFF Musical Score |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-09-22. Review by: 2027-09-22.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).