Musical MPs rock Parliament
MP4 bills itself as the world's only parliamentary rock band. It is made up of three MPs and another who lost his seat in 2010.
One of them, keyboard player and Scottish nationalist Pete Wishart, was a member of bands Runrig and Big Country and once appeared on Top of the Pops.
SDLP MPs Margaret Ritchie and Mark Durkan are both fans of the band – they turned up at a gig in Parliament this week to show their support.