The Rolling Stones had a start to their Rock and Roll that was not dissimilar to The Beatles, but The Stones had a different, more bluesy/swingy approach to their music. This was displayed in their instruments. But as their musical abilities grew they did not stray too far from the classic; two guitars, bass and drums with the vocals on top but as time went on they refined their sound and used more instruments, but never went so far as to completely throw out the conventional setup, except in the Satanic Majesties time.