Now celebrating its 15th anniversary, the William Ferris Chorale has garnered quite a reputation, here and abroad, as an avid and assured presenter of a refreshingly diverse repertory of 19th- and 20th-century vocal music. What makes the chorale and its founder even more special is their willingness to revive obscure and unjustly neglected works. Such is their agenda for this Stravinsky mini-retrospective. The Cantata, rarely performed nowadays, is a transitional piece that, in 1952, signaled the composer’s rekindled infatuation with serialism and the onset of his final stylistic metamorphosis. Based on a quartet of anonymous early English lyrics, it has been praised as a masterful juxtaposition of inventive rhythm. The neoclassical Stravinsky is represented on the bill by the Mass (1948) inspired by Mozart and noted for its ritualistic severity. Also included are colorful, diverting examples of his early (and better-known) style, such as the Four Russian Peasant Songs. Tonight, 8 PM, Our Lady of Mount Carmel Church, 690 W. Belmont; 922-2070.