The veteran rockers will headline Britain's most famous music event in June (13), as well as a gig in London's Hyde Park a week later, but Watts admits he was against the idea of signing up for the massive shows.
He tells Britain's The Guardian, "I don't want to do it (play at Glastonbury). Everyone else does. I don't like playing outdoors, and I certainly don't like festivals... The worst thing playing outdoors is when the wind blows, if you're a drummer, because the cymbals move... It is really hard to play then."
The band has never played at Glastonbury before, and they last performed in Hyde Park in 1969.