After the Brit Awards, many stars repaired to Shepherd's Bush Empire for the War Child charity concert. On this auspicious occaision, Coldplay's Chris Martin made up for his band's snub at the hands of the jury by appearing on stage not only with Bono but also with Brandon Flowers of the Killers and also Gary Barlow from Take That! Imagine if a bomb went off then and there! What hope would the African children have then?

Ogling this astonishing quartet, I wonder: what is the collective noun for a group of artists of such diverse and massive talent? An ebullience of pop stars? A supernova of pop stars? A git of pop stars? Suggestions please!