The performance was only 20 minutes long, and the "premier" of Joseph and The Amazing Technicolour Dreamcoat was on 1st March 1968 at the Old Assembly Hall, Colet Court, Hammersmith.
Trivia: ALW & his pal Tim Rice sold the copyright back then for 100 guineas between them, and bought in back in 1989 for £1 million!Only available on vinyl, and out of print now, the first recording of Joseph was in 1969.