Glastonbury is always a hotbed of musical rumour and surprise. The Music Week will be there all weekend reporting each night on those rumours which evolve into unique musical moments; the ones which turn out to be nothing more than the festival equivalent of "put enough monkeys in front of a typewriter"; and the stories which come out of nowhere to make Glastonbury so special. We'll speak to musicians across the board - from the headliners to the first-timers, and of course the most crucial people at any festival - the punters.