can any one please tell me the name and how I would be able to contact the man whom appeared on the programme on Saturday March 17th called "walk on by - the story of popular song, BBC2 8.15 pm. The man was playing a piano and singing G Gershwins songs, i think from his house in America. He was very clued up on the history of George and may even of been a biographer. I was memorised by his eyes and forgot to look at his name. PLease can anyone help?