Bill Haley and his fabulous 'Comets' launchers of the Rock 'n' Roll craze, show their versatile talents during a rehearsal at the Dominion Theatre, Tottenham Court Road, where they open their British Tour toneight, The boys are Johnnie Grande, accordian; Al Rex, demonstrating a new style of double bass-playing; Bill Haley, Guitar; Ruddy Pompilli, blowing saxophone from a postreate position; Franny Beecher, electric guitar; and Billie Williamson, steel guitar. 6th February 1957.