There's an effervescent joy permeating the Circa '21 Dinner Playhouse's The Sound of Music from beginning to end - minus the Nazi involvement, of course. Director/choreographer Jim Hesselman's production exudes an infectious glee that, for me, lifts this Rodgers & Hammerstein classic to new heights of performance pleasure. And as Hesselman must know that audiences take great delight in its composers' cherished musical and remember it fondly, he plays to those happy memories.