The von Trapp Family Singers, from left, Kurt (Isaac Herzog), Louisa (Kennedy Martin), Liesl (Hillary Smith), Maria (Cara Statham Serber), Gretl (Emma Rogers), Captain Georg (David Schmittou), Freidrich (Thomas Whitcomb), Brigitta (Madison Moll), and Marta (Lucy Neal) sing in the Kaltzberg Music Festival in Beef & Boards Dinner Theatre’s production of The Sound of Music, now on stage through June 30.