i've not heard of this. it says 1961, but the morgan discography lists it as
1959-07-22 Lee Morgan with the Oscar Peterson Trio
Canadian Broadcasting Corporation TelecastLee Morgan (tp), Oscar Peterson (p), Ray Brown (b), Ed Thigpen (ds)Toronto, Canada, July 22, 1959Moanin’
http://www.press.umich.edu/pdf/9780472115020-Discography.pdf