Zoe Ball redefines the astrophysics of radio as she fuses music atoms with pithy banter particles in Radio 2's Big Bang. Featuring Michael McDonald choosing songs by Elton John and The Beatles in Tracks Of My Years. Plus two more hopefuls take on PopMaster, the Record and Album Of The Week and we'll play the Love Song for everybody who has somebody to love. Please note: competitions or votes featured in this programme may now be closed.