It's a nice soulful acapella, Mark. I'll quite like them as you hear what people are singing about, but there no much use to non-chin- strokers and dancers.
I also like studio cuts of different versions, if anyone has any to post up. Oh and especially the bit where the singer / group is being counted in by the producer.
If you want I can post up James Jamerson playing just the base line to "ain't no mountain high enough"!