Mick Jagger about writing songs (1974):
“I think that rock and roll songs are pretty ephemeral. To me they are because when I I’ve done one I want to write another one. I think that as soon as you’ve recorded a song it doesn’t belong to you anymore. It just goes out and everyone can sing it, everyone can do it if they want. They can change it. You know what I mean? It’s not yours. It’s yours when you are playing it in your bedroom or something it’s still private, but when you’ve let it out you’ve got to get on with something else.”

(Ref. writing songs)