sentences:  Whitehorn has also contributed to the recordings and performances of other artists, such as Bad Company, Jethro Tull, Kevin Ayers, Elkie Brooks, The Who, Roger Waters, Manfred Mann's Earth Band, Paul McCartney, Billy Ocean and Paul Rodgers.In 2007, he worked with Elkie Brooks on her UK tour.Since then Geoff has played regularly with Gambler and, more recently, The Strumbums.