# Help writing a Regular Expression
**URL:** https://community.mp3tag.de/t/help-writing-a-regular-expression/5998
**Category:** Support
**Created:** [January 1, 2008, 3:39pm UTC](https://community.mp3tag.de/t/help-writing-a-regular-expression/5998 "2008-01-01T15:39:02Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@im2bob](https://community.mp3tag.de/u/im2bob)
#### Post date: [January 1, 2008, 3:39pm UTC](https://community.mp3tag.de/t/help-writing-a-regular-expression/5998/1 "2008-01-01T15:39:02Z")
I accidentally ended up with a bunch of files named like this:
Unknown - Songname.mp3
I need to remove the leading "Unknown - " I know this is an easy Regex but I am new to this an desperately need to fix these file names.
Thanks in advance.
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### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [January 1, 2008, 6:17pm UTC](https://community.mp3tag.de/t/help-writing-a-regular-expression/5998/2 "2008-01-01T18:17:28Z")
"^Unknown - " or "^Unknown\s+-\s+"
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### Author:  [@im2bob](https://community.mp3tag.de/u/im2bob)
#### Post date: [January 1, 2008, 10:27pm UTC](https://community.mp3tag.de/t/help-writing-a-regular-expression/5998/3 "2008-01-01T22:27:15Z")
Thanks a lot!
> [@dano](#):
>
> "^Unknown - " or "^Unknown\s+-\s+"
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:20pm UTC](https://community.mp3tag.de/t/help-writing-a-regular-expression/5998/4 "2026-02-09T12:20:41Z")