If you remember the days when syndicated radio specials used to be distributed on LPs, you'll appreciate this story. It's about a series of special live radio concerts that were supposed to air just once on stations across the U.S. - but have now become some of the most prized collectibles on the record market. 

"Station managers across the country raved. WBUF in Buffalo said they had received more listener phone response than any concert they had run before."

How "Super Groups In Concert" became a radio and collecting phenomenon