71. "Emotional Rescue" (1980)
In the studio one night, Jagger improvised an outrageous falsetto-disco goof at the electric piano, backed by Wood on bass and Watts on drums. The resulting track stretches out near the six-minute mark, with Jagger making up his arched-eyebrow sex monologue as he goes along. The Stones decided to release it as a single – whereupon it became a massive international dance hit.