insert_link Music This Day in Music History – September 21st 1968 - "All Along the Watchtower" was released by Jimi Hendrix. 1972 - The first episode of ABC-TV's "In Concert" was taped at Hofstra University. Alice Cooper, Bo Diddley and Seals & Croft appeared in the first episode. It was aired November 24. 1974 - BTO released "You Ain't Seen Nothin' Yet." 1974 - Jeff "Skunk" Baxter joined the Doobie Brothers. 1976 - The 20th album by the Bee Gees, […] todaySeptember 21, 2020