I love how, when the four most famous and influential musicians of the time (possibly ever) get together to compose and rehearse on a strict deadline, what do they do? Bum around for two days playing half-remembered snatches of songs from their youth and cracking childish jokes. Just like the rest of us.
Episode 1 was a remarkable thing to watch, I frequently had goosebumps. Bonus comedy points for the director's obsession with torchlit Arabs.