Ruby Tuesday
I heard an interview with Keith Richards a while ago - he said when they were first getting started, their manager told them they’d gone as far as they were ever going to go b/c all they were doing was covers for other artists and needed their own, original material.
He put Keith and Mick in a room, closed the door and told them NOT to come out until they’d written a song.
“Ruby Tuesday” was the result - also had that on a 45...