The unlikely creative partnership between Oxford-educated Kit Lambert (son of classical composer/conductor Constant Lambert) and Chris Stamp (brother of actor Terence) provided the spark that turned R&B band the High Numbers into rock opera-creating behemoth the Who. This solidly constructed documentary traces the odd couple’s dreams of using a rock band to forge a feature-film career – an endeavour in which they were thwarted. There are candid interviews from Stamp, Pete Townshend and Roger Daltrey and pleasurable acres of archival footage.