There are far worse things to indoctrinate your kids into than jazz. These pied-piper pushers of syncopation mean to serve as your children’s gateway to everything from Blossom Dearie to the giant who gives the group its punning name, just as Schoolhouse Rock hipped ’70s youngsters to Dearie and Bob Dorough. Bassist-producer Chris Donohue has played or recorded alongside a roster of stellar artists — Emmylou Harris, Elvis Costello and Robert Plant, to name just a few — but he sounds like he’s having the time of his life backing Nashville singer-songwriter Katy Bowser, whose bubbly, burbling delivery meets your sugared-up tots on common ground. On “I’m Diggin’ Me,” the first track on their new CD Swings!, Bowser comes on like Junie B. Jones fronting an Ella Fitzgerald session, slinging syllables like snap pops as she takes pride in her Wonder Woman Underoos. But don’t worry that you’re getting OK-for-kids jazz — or worse, a dose of musical castor oil you choke down “because it’s good for you.” This is all cheery, hip-swinging insouciance, and jaded jazzbo parents will have no problems joining their tots on board.