Description
From the cover It is a recording "dedicated to the pioneers of APL with respect and affection by J.C.L GUEST"
From Smart Arays
http://smartarrays.com/downloads/aplblossomtime/aplblossomtime.html
"APL Blossom Time was written by Mike Montalbano from the IBM Santa Teresa Laboratory in 1981. He published this and other writings under the name J. C. L. Guest. It was performed live at APL 81 in San Francisco. A studio recording was made by Jim Brown and made available on a 45 RPM record by APL PRESS".