He took his role as rhythm guitarist with extreme seriousness, learning new chords as diligently as he ever had, sometimes even proudly announcing, “I’m playing a G minor seventh here, Paul!” But all other musical disciplines bored him. “George would work away like a Turkish carpet-maker at whatever it was, whether mending a car or constructing a song,” Martin says. “John couldn’t be bothered even to tune his guitar. He was a completely impractical man. And if there was someone around to do it for him, why not? That was his attitude.