Lily Allen has been a music machine within the past few months. First she hit us with the tune “Somewhere Only We Know”, which was the soundtrack to the John Lewis Christmas television advertising. Next came the fun track “Hard Out Here”, along with an official clip that comically depicted the state of current (and stereotypical) music videos. Allen now delivers the bouncy, beat and clap “Air Balloon”. Almost childlike in sound, stylistically the song embodies the playful spirit of her 2006 recording “Alright, Still”, with a little more sass.