What should be done about different mixes of recordings with the same ISRC?

MusicBrainz Style
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If 2 tracks have the same ISRC, but are audibly different (i.e. different mix), should they count as a distinct recording?

Example: Low by Wage War

The single released prior to the full album is audibly different to the album version (likely was re-mixed prior to album release), but it has the same ISRC. How should this be handled? Currently there is no distinction between the two versions.

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ISRCs are often wrong. Yes, two different sounding recordings are two different Recordings.

ISRC is about where the money is directed. So from the ISRC side the money will be correctly allocated which ever mix of the track is played\sold.

Worth adding a note in the annotation of the Recording about the reused ISRC.

It is also worth looking closely at CD and Digital albums to compare this track. I have seen a release, Release group “The Alchemist’s Euphoria” by Kasabian - MusicBrainz, where a single was released ahead of an album. The CDs were pressed with a different version of the track, but all the digital shops like Spotify sold the album with the Single version of the track. Meaning the CD was unique in holding this different version of the track. In that example the ISRCs were different on the physical CD. This stood out due to different track lengths which made me dive in to check details. (It ended up being the one and only time I pulled ISRCs out of a CD)

I don’t think this release was unique in doing this.

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Thanks, I’ve created a seperate recording for the track now. Would the best way to link the two versions be the ‘edit of’ relationship?

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Either edit of or remix of.

I generally use “edit of” if bits are just chopped out or is shorter. And “remix of” if it has been changed in some way.

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