Hayley Angel Holt, Lauren Blake, Helena Dowling and Bryony Afferson are in the real band Frank, They are signed with Polydor Records and will begin releasing their material in 2006.
The three girls who play instruments do actually play them, it was part of their audition to get into the show and the band.
The first series theme song was "Complicated" by Frank however the second series theme song was "Turn It Up" by Frank. The titles for the opening credits also changed.