Titles read: "Pathetone now has pleasure in presenting - The Popular Broadcasters - KING & PRINCE (and two Pianos) and LEN BERMON [sic] (of Henry Hall's B.B.C. Dance Band Fame)".
London (probably Pathe Studio).
Various shots of King and Prince playing grand pianos, back to back. Len Berman walks onto set and sings 'Leave The Pretty Girls Alone'. The song is about his philandering with numerous women, until he met the one who became his wife.
Note: although titles says Len Bermon, I think his correct name is Berman.