Possible Clues:

• One might be seen on the tube
• Sort of evocative music that may well be on it
• A Prom germ, possibly picked up at the door
• Career golfer carrying little weight on course
• Sort of music provided for theatregoers?
• Schedule of concert with lightweight content plus Elgar's First
• In place of a little that's metric is all for show
• Bill's no amateur lightweight
• Little weight attached to argument in favour of broadcast
• Favouring lightweight course