Deborah, thank you very much for finding that video & your comment reposting it here. I recorded this entire 1-hour lecture by Al Bell -- LECTURE PLAYLIST LINK --and divided it into sections to make the Led Zeppelin quote section accessible. It was a fascinating talk by a legend of the recording industry (Mr. Bell). Being a huge Zep fan I delighted in hearing the LZ accolades he recited with the cadence of a preacher at the pulpit of Music History.