I was going thru some boxes that have been in storage and moved all over (Originated in Dallas- St. Louis- Tucson- Dallas) for the past 40 years. The recording was on a Maxwell UD 35-180. I did not have hopes it would still be good, but it played as if I made it yesterday. Now what was the recording? 2 Dallas radio stations teamed up to broadcast live a discrete quad performance. The group was the "L.A. Express" playing live from the January Sounds Studios. The "Zoo", KZEW 97.9MHZ (1973-1989) broadcasted the front channels and KERA 90.1MHZ broadcasted the rear channels. The program was hosted by Michael Brown. As foolish I was back then I did not write down all of the specifics of the event. Does anyone hear remember or have info about the broadcast? I am going to contact KERA and KBFB (now has the 97.9 Frequency) and January Sounds Studios which is still operating.