"Youthful Romances" may have started their celebrity tie-in with issue 8 (not online yet so we can't be sure). But certainly at least from 9-14 the lead story in each issue featured a popular singer. These all used the singer (Guy Mitchell, Don Cornell, Mel Torme, Richard Hayes, Tony Martin, Tony Bennett) as a deus ex machina to reunite two lovers. These comics were published in the period when solo singers had taken over from big bands and before rock and roll got started, so even though we might view these celebrities as doing "music for old people," that wasn't the case at the time.
Link to the book:
Youthful Romances 09