From an arm-chair Music Director: Sounds like Swing 1270 keeps adding to their music library – nice. Now, just get rid of the “modern” pop crap (Turtles, Carpenters, Neil Diamond and the like) and replace it with some instrumental big-band (Duke, Dorsey, Miller, the Count and the like).
The goal of commercial is to have the largest audience with the youngest demos as possible. Obviously no AM station is going to do well with 35 & under but could do well 12+ (actually 54+). You have to remember the Beatles I Want To Hold Your Hand/She Loves You are going on 50 years old. The only way the music you suggest to gain any kind of audience on commercial radio would be to put radios in cemeteries.