Most recordings (to be merged) have contributed to a specific AcoustID (Track "4acbc83d-7e07-4ea1-93b0-c8e05b9852a8" | AcoustID). This AcoustID can also be found at the target recording (single version). But the target has another one attached: Track "b307d2d2-3792-4601-b0ca-03709fb948cc" | AcoustID. So I thought about disabling the other AcoustID from the recording…
I’ve got two versions ¹ of this recording - one from the original single, the other from the Singles 90-98 compilation. To verify that, I submitted fingerprints from both versions. I expected them to go to the same Acoust ID - they didn’t. The single version’s fingerprint matches one from the second AcoustID.
Fingerprints compared: Compare fingerprints #46460005 and #29429161 | AcoustID
Why are these separate AcoustIDs? And why is the fingerprint of the single version that much longer?
There are plenty of fingerprints with each AcoustID. What makes the difference?
¹) The two versions differ in length by 3 seconds (earlier fade) / one was ripped from vinyl, the other from CD