Gerry Rafferty

Humblebums, with Tam and the big Yin.

"In 1969 Rafferty became the third member of a folk-pop group, The Humblebums, along with comedian Billy Connolly and Tam Harvey. Harvey left shortly afterwards, and Rafferty and Connolly continued as a duo, recording two more albums for Transatlantic Records. A 1970 appearance at the Royal Festival Hall, supporting Fotheringay with Nick Drake, earned a positive review from critic Karl Dallas, who noted that all three acts showed "promise rather than fulfilment", and observed that "Gerry Rafferty's songs have the sweet tenderness of Paul McCartney in his 'Yesterday' mood".

I think I was at that gig, but I am pretty sure that Nick Drake did not play/turn up.