On Monday, Yale University's Whiffenpoofs, the oldest college a cappella group in the country, sang a private concert for Stuart Middle School and Upper School girls and faculty and staff. The audience was entranced by the group's harmonies, choreography and wit. Highlights included "I Can't Help Falling in Love With You," "Ride the Chariot," and the famous "Whiffenpoof Song." The rapt audience couldn't get enough and erupted with excitement at multiple times during the concert. The Whiffenpoofs made lifelong fans out of our Stuart girls! See highlights from the concert in Stuart's Instagram Story and photos in our SmugMug gallery or in the slideshow below.