In a show devoted to movie music, Lemmon playing piano, sings a medley of Gershwin numbers with Dinah, Syd does an exotic mysterious east themed dance, all get together in costume to salute songs (mostly from Circa 1930) that flopped.
"A boy, a girl and a piano" - This line from the episode's introduction describes the proceedings to a tee. Singer Bobby Darin and pianist André Previn join Dinah Shore for an hour of song with no props (other than Previn's piano), no comedy and very little banter.