Blue is a piano concerto by British composer Matthew King, composed specially for the autistic savant pianist Derek Paravicini. The concerto grew out of an improvisation session between the pianist and composer for BBC Radio 4 programme called The Inner World of Music.[1] during which King and Paravicini extemporised in numerous styles. Fascinated by Paravicini's ability to improvise using advanced harmonies, similar to Ravel or Scryabin, King improvised with him for several sessions, slowly devising a work that came to use a number of themes from Gershwin as the basis for a large single movement piece in extended Sonata Form. A number of themes appear upside down. The concerto begins with a depiction of musical chaos, out of which thematic ideas gradually appear.
