Ex-Wise Heads are Colin Edwin: Basses, Guimbri, Programming. Geoff Leigh: Flutes, Soprano Saxophone. Ex-Wise Heads is the result of a chance meeting between bassist Colin Edwin, of innovative rock band Porcupine Tree, and multi-instrumentalist and reed player Geoff Leigh, best known for his work with the legendary Henry Cow. Since forming the band as a duo in 1998, Ex-Wise Heads have given their own curiously English and refreshing take on improvised and world influenced music