On some American Bandstand shows from the mid-to-late 1970s, they'd come back from break after whoever had 'performed' live, and Dick Clark would do a 10 to 15 second tease for whatever was coming up in the second half, and then the camera would pan across the audience, who'd all be clapping and swaying to the same song. It's a funky-synth instrumental song I've heard maybe 3 times on the radio, but I've never heard the artist/title announced. Anyone know this?