Mine was back in the kazaa/limewire days, there was a particular track that get repeatedly uploaded under fake names. Except it was just a 10 second loop rather than an entire track so I only had 1 line of lyrics to work from "I am suffocating"

Back in the day it wasn't as easy to search things online, but I eventually found it was Breathless by Lifer

Edit: Also it's quite UK specific, but there was a pop group called Alisha's attic in the 90s that did a live rock version of one their songs. I recorded it off the radio but that cassette got lost somewhere. I couldn't even find a mention of it online