# Why doesn't Parenthesis \\) Filter
**URL:** https://community.mp3tag.de/t/why-doesnt-parenthesis-filter/70110
**Category:** Support
**Created:** [November 10, 2025, 3:23am UTC](https://community.mp3tag.de/t/why-doesnt-parenthesis-filter/70110 "2025-11-10T03:23:21Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@djrip](https://community.mp3tag.de/u/djrip)
#### Post date: [November 10, 2025, 3:23am UTC](https://community.mp3tag.de/t/why-doesnt-parenthesis-filter/70110/1 "2025-11-10T03:23:21Z")
I’m trying to filter using REGEX:
%title% MATCHES \s\(Radio\)$
To find: One Of These Days (Radio)
But it also finds things that aren’t even close, like:
Opal (Four Tet Remix)
Oops Up (Deejayovi Redrum)One
Week (Super Short Edit)
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [November 10, 2025, 6:01am UTC](https://community.mp3tag.de/t/why-doesnt-parenthesis-filter/70110/2 "2025-11-10T06:01:51Z")
Try
`%title% MATCHES "\s\(Radio\)$"`
From the [documentation](https://docs.mp3tag.de/filter/#notes)
- If `` in HAS/IS/GREATER/LESS/EQUAL/MATCHES contains `$` or `%` it should be enclosed in double quotation marks and will be treated as a [format string](https://docs.mp3tag.de/format) instead of a tag field name.
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### Author:  [@djrip](https://community.mp3tag.de/u/djrip)
#### Post date: [November 10, 2025, 7:45pm UTC](https://community.mp3tag.de/t/why-doesnt-parenthesis-filter/70110/3 "2025-11-10T19:45:21Z")
Ahh, the old documentation. Why didn’t I think of that? Thank you.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [December 10, 2025, 7:45pm UTC](https://community.mp3tag.de/t/why-doesnt-parenthesis-filter/70110/4 "2025-12-10T19:45:41Z")
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