Paul Gambaccini is in the questionmaster's chair for the wide-ranging music quiz, with competitors from East Sussex, Essex and Nottingham.
Could you distinguish Grieg's piano concerto from Tchaikovsky's? And do you know your Coldplay from your Elbow? The contestants in today's Counterpoint heat will be very much hoping they can avoid such confusions, as they face Paul Gambaccini's questions on every aspect and era of music.
As well as proving the breadth of their general musical knowledge, they'll be asked to pick a topic on which to answer specialist questions, from a list of categories for which they've had no chance to prepare.
The winner will take another of the places in the series semi-finals coming up in September.
Producer: Paul Bajoria.
A Waltz Through The Movies
The Summer of Sergeant Pepper
EDDIE ALEXANDER, a primary school teacher from South Woodham Ferrers in Essex
BRYAN McALLEY, a former prison governor from Brighton
DIANE VEALE, a retired civil servant from Nottingham.