Top of the Pops, 20 March 1975:
Pan’s People dance to What Am I Gonna Do with You by Barry White.
Pan’s People in posh white frocks dance to a classic romantic rumble from the “Walrus of Love”.
An example of the unpredictability of dry-ice: at times the clouds of carbon dioxide threaten to engulf the dancers entirely.
Thanks to Andeebee for the YouTube post.