# Fixing multiple 'feat.' in the artist field
**URL:** https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532
**Category:** Support
**Created:** [January 23, 2024, 9:46am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532 "2024-01-23T09:46:27Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@Dan10305](https://community.mp3tag.de/u/Dan10305)
#### Post date: [January 23, 2024, 9:46am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/1 "2024-01-23T09:46:27Z")
Hi all,
I've made a bit of a mess of my library and I'm trying to fix it but have long since hit the limit of my ability with regex.
My artist fields all look something like this:
Westside Gunn feat. Busta Rhymes feat. Raekwon feat. Ghostface Killah feat. Stove God Cooks
What I'm trying to get to is something like:
Westside Gunn feat. Busta Rhymes, Raekwon, Ghostface Killah & Stove God Cooks....or
Westside Gunn feat. Busta Rhymes, Raekwon, Ghostface Killah, Stove God Cooks would be fine too.
Does anyone have any suggestions as to how I can deal with these extra 'feat.' values?
Thanks all
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### Author:  [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [January 23, 2024, 9:50am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/2 "2024-01-23T09:50:45Z")
> [@Dan10305](#):
>
> Westside Gunn feat. Busta Rhymes, Raekwon, Ghostface Killah & Stove God Cooks
I don't see how a regular expression could guess that in this case the "` feat.` " should be replaced
with "` &` "
For the other cases, you want to replace all the "` feat.` " with a comma and a space, but not the first occurrence of "` feat.` ", right?
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### Author:  [@Dan10305](https://community.mp3tag.de/u/Dan10305)
#### Post date: [January 23, 2024, 10:20am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/5 "2024-01-23T10:20:24Z")
I thought getting the last one as '&' was a step too far but yes, all but the first 'feat.' as a comma and space would be fantastic if possible
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [January 23, 2024, 10:22am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/6 "2024-01-23T10:22:55Z")
Try an action of the type "Format value" for ARTIST
Format string: `$replace($regexp($replace($regexp(%artist%,(.*?) feat\. (.*),$1==$2), feat.,','),'(.*), (.*)',$1 & $2),==, feat. )`
From
Westside Gunn feat. Busta Rhymes feat. Raekwon feat. Ghostface Killah feat. Stove God Cooks
to:
"Westside Gunn feat. Busta Rhymes, Raekwon, Ghostface Killah & Stove God Cooks
---
### Author:  [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [January 23, 2024, 10:27am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/7 "2024-01-23T10:27:33Z")
Would you mind to tell us in a short explanation how this works? 😉
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### Author:  [@Dan10305](https://community.mp3tag.de/u/Dan10305)
#### Post date: [January 23, 2024, 10:28am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/8 "2024-01-23T10:28:25Z")
That is exactly it. Thank you so much I really appreciate the help.
That has handled all of the tracks in Westside Gunn's album '10' with varying numbers of featured artists.
Thanks again.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [January 23, 2024, 10:32am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/9 "2024-01-23T10:32:24Z")
> [@LyricsLover](#):
>
> how this works
`Format string: $replace($regexp($replace($regexp(%artist%,(.*?) feat\. (.*),$1==$2), feat.,','),'(.*), (.*)',$1 & $2),==, feat. )`
You have to read that inside out.
So: take the initial string from artist and replace the first "feat." with == so that it is something else than all the other "feat"s. You get the first with the greadiness-reducer "?" in the first group description.
Now replace all the other "feat." in that string with == by commas.
Then use a regular expression to replace the last comma with an ampersand.
and finally replace the == with "feat." again.
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### Author:  [@Dan10305](https://community.mp3tag.de/u/Dan10305)
#### Post date: [January 23, 2024, 10:45am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/10 "2024-01-23T10:45:22Z")
Just to add a note on to this for anyone else who might need to use this solution on their own files - just be aware of any artists with a comma in the name.
There might be a more elegant way to do this but I've run a step before hand to change the artist name (so 'Tyler, the Creator' is changed to 'Tyler the Creator')... then run the fix ...then run a final step to change 'Tyler the Creator' back to 'Tyler, the Creator'
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 22, 2024, 10:45am UTC](https://community.mp3tag.de/t/fixing-multiple-feat-in-the-artist-field/63532/11 "2024-02-22T10:45:48Z")
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