I chanced upon this fascinating thread, particularily fascinating for me as I dis a lot of work for BBC Schools' Radio in the 1960s and 70. as pianist, script writer, presenter and occasionally contract producer. I have many happy memories od accompanying William Appleby in various programmes, possibly Singing Together though my memory is so bad I'm afraid. I certainly did Time & Tune, Music Session, Music Session One, A Corner For Music, Springboard, Music Club, The Music Box - even Listen with Mother! I'm looking at the Time & Tune pamphlet now with The Song of the Zartians, so I guess I might have been accompanist in that programme. Happy days!