Practically seconds after the sad news of Foo Fighters' Glastonbury cancellation had hit the headlines, fans and the media alike were speculating as to who could replace them. We've even had a go ourselves.
Sure, some of the suggestions have been more than a little optimistic (see: David Bowie, Adele, Oasis, The Beatles probably) - but that's not without precedent. Over the years, there have been many massive acts who've valiantly stepped in at the last minute to headline festivals.
Here are some of the most notable and impressive last-minute festival replacements of recent years.