Tab Hunter with Dinah Shore

Here's another photo about which we know nothing, but we assume it's from a guest appearance on the The Dinah Shore Chevy Show, which aired on NBC from 1956 to 1963. Wonder what they're singing. "Young Love"? "Ninety-Nine Ways"? "Red Sails in the Sunset?" "In-A-Gadda-Da-Vida"? Who knows?