sentences:  He made his stage debut in "Over There", a new play by Mark Ravenhill alongside his twin brother Luke at the Royal Court Theatre in 2009.Treadaway is also credited as a songwriter, after writing the piece "Sink or Swim" which he and Luke performed both on film and on the soundtrack of "Brothers of the Head".He also performed his song "Raise This Up" in "Brothers of the Head" as a solo performance during the scene in which Tom Howe's girlfriend breaks his heart.