Yep, he rarely played live due to stage fright. I remember a story of him walking off stage at the Festival Hall in a complete mess. That kind of music didn't sell truckloads, and you needed to play live to make a living and to spread the word because you were unlikely to have a hit single that would help to promote you, and the only DJ that played your records wasn't on until 10 at night. John Martyn used to play 250 gigs a year, which is why he made it, and Nick Drake didn't.