6. "Sister Morphine"
Many great rock songs used coded language to refer to drug use. "Sister Morphine" is not one of those songs: It's about a severely injured man in a hospital bed that gets more than a little comfort from his friends Sister Morphine and Cousin Cocaine. Jagger began the tune in 1968, and Marianne Faithful added in a few lyrics. She cut the song herself in 1969, and when she saw that the Stones released it on Sticky Fingers without giving her any credit she filed a claim. Today the song is credited to Jagger/Richards/Faithful.