YES -

Live at the Rainbow Theatre, London, December 1972
Steve Howe: "It's the first song I ever wrote, and I think it's really a good piece. I wrote it on the 4th of August in 1969, when my oldest son, Dylan, was born. The very night that he was born, I finished the song. Originally, it was a dedication to Chet Atkins, but then it became a dedication to Dylan. It combined a lot of things I'd learned or imagined. I always wanted to write music, and when I decided to write solo guitar music, it was earth-shattering inside, because suddenly I was an independent person. I could stand up on stage and play Clap. That meant as much to me as it did to be in Yes."

Taken from the YES live concert film 'YesSongs', available on DVD at Amazon.com
http://www.amazon.com/gp/product/6305076995