Featuring Mr. Jeremiah and Mr. Steve—both Capitol Hill-based dads and music teachers—the duo’s roots-and-blues tunes are carefully tailored to get children dancing while delighting grownups—an approach that successfully hooks audiences young and old. With their musical stories, amusing wordplay, and close attention to all of their audiences, King Bullfrog is the hottest sensation in family music in the DC area. Or at least the most amphibian.