Fear not, the three-hour concert is now available for listening on the BBC Radio website. In addition to a host of pop stars, the concert also boasted many stage greats, including Elaine Paige (who re-created a moment from Chess with Siobhan McCarthy), Kerry Ellis (who performed a song from Benny Andersson and Bjorn Ulvaeus' latest musical) and the cast of the London production of Mamma Mia!
To listen to the concert, which will be available through Sept. 20, click here.