While not as old as Yale's other well-known club -- the ritual-based secret society the Order of Skull and Bones, which produces world leaders and inspires bad movies The Yale Alley Cats have been around since 1943. The vocal group features students from the esteemed university, creating a rotating lineup like Menudo, with less melanin. While the group hasn't produced a Ricky Martin or a corrupt dictator, it's established a reputation for watertight harmonies, energetic performances and a sense of humor. The collegiate a cappella group brings its vocal blends to St. Christopher's School Thursday, Jan. 10, at 7:30 p.m. Free. 282-3185.