He reveals that The Who were added to the Pyramid Stage bill at the last moment, "replacing Prince who decided not to come this year." Townshend told the 100,000-strong crowd on June 28: "This could have been better, but it's as good as it can be. It would have been great to have had a sound check and sorted ourselves out before we came out and hit you with all this sh*t."

The roadie says in a blog on the band website: "As we began to prepare, we found someone had sabotaged the carefully-tested audio connections for much of our gear. We've never seen that before - but we're good at plugging things in, so all damage was repaired in time."

He continues: "Within a few songs, we knew something was wrong. The band were playing more than a little loose, rather sloppy in fact. Pete was growing angry right away, yelling at one point that the band ought to play 'like we're in the same f***ing band' and telling brother Simon to pay close attention to their sync together.

"Soon after, Pete decided the sound screens in front of Zak's drums were in the way, and violently pulled them over. It helped, though, and he was more happy for a bit. The audience loved the raw violence of it, a rare display of anger you'd not see at others' shows. One more reason to see The Who.

"Late in the show, Roger decided he wanted all the screens off the drums, which is generally his own worst nightmare. He likes a controlled sound in his middle zone. The screens are up there directly at his own request.