From all appearances, Karen and Barry Mason seemed like a regular suburban couple raising three kids in Los Angeles. But for decades, up until this year, they ran the largest gay porn emporium in that city, and for a time were the biggest distributors in the United States, even producing their own films.

Something of a supergroup will assemble on the stage at the Stephen Talkhouse in Amagansett on Wednesday at 8 p.m. At its center, will be the singer and songwriter LeRoy Bell.

“Hearts Aflame: Love Letters and Torch Songs” will feature a dozen prominent actors reading passionate communiqués ranging from 12th-century letters to contemporary emails in a benefit performance at Guild Hall on Sunday evening at 7.