Please never merge DJ-mixed tracks with the original/separate tracks.
- ISRCs mean nothing. In compilations of edited/cut/DJ-mixed tracks, the ISRC used is usually for the original, pre-edited recording. So the same ISRC will be present across multiple MusicBrainz Recordings.
- AcoustID intentionally ignores a variable amount of the early part of the fingerprint, allowing entirely different edits to have the same AcoustID - see the comparison. The minimum definition of a DJ-mix is that the beginning and end of the audio has been crossfaded/layered onto other audio. So again, the same AcoustID will be present across multiple MusicBrainz Recordings.
