Here's something to add to this.
I had an interesting experience today, with a local radio DJ Bob Rivers of "twisted Tunes' fame here along with the #1 Jimi Hendrix tribute guy Randy Hansen. Both of them belong to a band called Heart by Heart, with Heart drummer Mike Derosier and founding Heart bassist Steve Fosset, who was also supposed to be here for listening to some Heart multitracks... Steve couldn't make it.
Randy and I started listening to Hendrix's 3rd Stone From the Sun multitrack. He wanted to hear it because it contains some pretty weird stuff...
Well, here's what we isolated and time/pitch corrected... in the whole mix, you really can't make anything out because it's so buried and slow...