there are a few sites that post isolated vocal stems from the Beatles, Stones, etc.
There's one from the Stones "Gimme Shelter" with Merry Clayton that will give you chills !!!
check out this link
[link=http://archive.org/details/TheRollingStones-GimmeShelter]http://archive.org/detail...ingStones-GimmeShelter[/link]
According to... The Rolling Stones: "The use of the female voice was the producer's idea. It would be one of those moments along the lines of 'I hear a girl on this track - get one on the phone.' " Clayton gives her solo performance, and one of the song's most famous pieces, after a solo performed by Richards, repeatedly singing "Rape, murder; It's just a shot away, It's just a shot away," and finally screaming the final stanza. She and Jagger finish the song with the line, "Love, sister, it's just a kiss away." To date it remains one of the most prominent contributions to a Rolling Stones track by a female vocalist...