Do you ever sing along to the radio? Many listeners to BBC Radio 3's Choral evensong confess they love to join in with the hymns - but recently they have suddenly found themselves singing solo. The programme has disappeared off the air without warning on no less than four occasions. Roger Bolton asks Christine Morgan, Head of Radio for Religion and Ethics, to explain what went wrong. Could it happen again?

Roger is granted an audience with the golden-throated denizens of Continuity, and puts your questions to announcer Corrie Corfield. What does the job involve? What do they do if something goes wrong? And do they fight to the death for the chance to read the clips on the News Quiz?

And after BBC Radio 4's World at One accidentally misattributed an archive clip to Richard Dimbleby, one sharp-eared listener calls Roger to reveal just who the mystery voice is.

Producer: Kate Taylor