Celebrating 50 years of presenting 'the music and magic of Broadway,' the Diablo Theatre Company, formerly known as DLOC (Diablo Light Opera Company), is honoring repeated patron requests for a full-scale, eye-popping production of the classic Broadway musical 'Hello, Dolly!' The show opens June 5 for 14 performances through June 28 at the Lesher Center for the Arts in Walnut Creek.