In May 2006, Wainwright was one of three guests (along with Robbie Williams and Frances Barber) to star with the Pet Shop Boys in a concert at London's Mermaid Theatre. He covered the Pet Shop Boys' "Casanova in Hell" (from Fundamental). The critically acclaimed show was broadcast on the UK's BBC Radio 2 and repeated on BBC 6 Music, and released as a CD (Concrete) in October 2006.
