2016 Summer Musical at Woodminster Theater. The Woodminster Amphitheater is a classic open-air performance facility that seats over 1500. In its early years, it was host to a variety of performances, pageants, and events. Then, in the summer of 1967, a fledgling Oakland arts organization called Producers Associates began to produce Broadway musicals at the Woodminster Amphitheater. A beloved Oakland tradition was born. Woodminster Summer Musicals provide a rare opportunity to see quality Broadway musicals at a price half that of the major houses across the Bay. Theyre a beloved tradition for many Oakland families, and a memorable treat for visitors to the city.