A song is such a short form ... that 'the slightest flaw seems like a mountain.' And so every song needs to be revised 'til it's close to perfection... But achieving perfection takes a lot of energy.
Stephen SondheimLet Pirelli's / Miracle Elixir / Activate your roots, sir... Keep it off your boots, sir- / Eats right through. Yes, get Pirelli's! / Use a bottle of it! / Ladies seem to love it... Flies do, too!
Stephen Sondheim