# M4A Files with BPM & Comment in Apple Music/Traktor not showing in MP3TAG

**URL:** https://community.mp3tag.de/t/m4a-files-with-bpm-comment-in-apple-music-traktor-not-showing-in-mp3tag/71311
**Category:** Mac
**Created:** [May 20, 2026, 9:53am UTC](https://community.mp3tag.de/t/m4a-files-with-bpm-comment-in-apple-music-traktor-not-showing-in-mp3tag/71311 "2026-05-20T09:53:00Z")
**Posts on this page:** 1
**Showing post:** 47

<div class="post-metadata">

### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [June 5, 2026, 8:51am UTC](https://community.mp3tag.de/t/m4a-files-with-bpm-comment-in-apple-music-traktor-not-showing-in-mp3tag/71311/47 "2026-06-05T08:51:17Z")

</div>

Please see also this thread, that shows that Traktor also takes data from perfectly standard fields and copies the contents to proprietary fields which makes them inaccessible by other tag readers:

> [@Decoding the TRAKTOR 4 binary data inside a PRIV tag](https://community.mp3tag.de/t/decoding-the-traktor-4-binary-data-inside-a-priv-tag/54352):
>
> I just add this free little online tool for all the people interested what the DJ-Software "[Traktor](https://www.native-instruments.com/en/catalog/traktor/)" saves inside his proprietary binary chunk inside a PRIV id3 tag. If you save the few available metadata tags for a mp3 file in Traktor, it looks like this: Especially the fields Comment 2 and Cat. No. can't be found as standard ID3 tag and are therefore not readable by Mp3tag. If you analyze such a track with the help of this online tool: [https://hellricer.github.io/2…](https://hellricer.github.io/2021/05/05/decoding-traktor4-field.html)

---

_[View the full topic](https://community.mp3tag.de/t/m4a-files-with-bpm-comment-in-apple-music-traktor-not-showing-in-mp3tag/71311)._