their music consists mainly of parody comic songs mostly dealing with medical subjects. a few of their parodies are based on the works of american comedic songwriter tom lehrer. they have performed at the edinburgh festival fringe every year since 2005 and adam kay performed at latitude 2012. ten percent of their sales, and all proceeds from the london underground song are donated to macmillan cancer relief. the duo have released three studio albums, fitness to practice, unfit to practise and have yourself a sweary little christmas. they also released an album of a live recording of their stage show called in theatre. their song anaesthetist’s hymn was featured in geek pop 2008.