A concert of 20th-century English music explores musical friendships. Walton’s Hindemith Variations pay homage to a beloved colleague; Elgar’s 'Enigma' Variations paint evocative portraits of family and friends. Tasmin Little joins the BBC Philharmonic for Moeran’s rarely heard Violin Concerto, and English music comes right up to date with David Horne’s Daedalus in Flight.