Jack McVea (who immortalized "Open The Door Richard" in the 1940s) and Jake Porter (going under the pseudonym King Porter), ran through their catalog of Jump Blues and the Platters were called in to supply the teen-oriented bits.

Jake Porter was a label owner in his own right, having started the L.A. based Combo Records, who churned out many hits on the R&B charts.

This particular show, even though it claims to be an hour, is really only a half-hour so I suspect it was a demo and maybe not actually aired. But in any event, the show was recorded on May 10, 1956 and gives you some idea of what was going on with radio aside from the local DJ's.