Gimme Shelter from the Rolling Stones is an awesome tune. I just came across an entry at Dangerous Minds that "wonderfully demonstrates how the Rolling Stones sound is more than just the sum of its parts, with the component tracks" from Gimme Shelter isolated for our enjoyment.
First we have the vocal harmonies of Mick Jagger and Merry Clayton.
Then there's the Keith Richards’ rhythm guitar track.
Then there's Ketih Richards’ second guitar and Nicky Hopkins on piano.
And Bill Wyman on bass.
And Charlie Watts on drums.