The Happy Ending Music & Reading Series is celebrating a happy beginning. The series performance on June 8 at Joe’s Pub marked the launch of Happy Ending’s partnership with Yaddo, an artists’ working community based in Saratoga Springs, New York. Starting next fall, the series will produce three shows featuring entirely Yaddo-affiliated artists. Wednesday night, Suzanne Bocanegra and Kyle deCamp performed a collaborative visual and performance piece, and Amor Towles read from his new novel.