The Brown Derbies is an all-male a cappella group at Brown University. They were founded by Darryl Shrock in 1982 and have released twelve albums. They sing a variety of different genres, ranging from Rock, to Barbershop, to R&B and are known in the a cappella community for their unique use of syllables in the background vocals. They have toured all around the United States and the globe, and even sang at the White House for President Bill Clinton and First Lady Hillary Clinton in 1997. In November 2007, they were featured on the CBS Early Show on a segment about the rising popularity of a cappella groups on college campuses, and in July 2011 they were featured on the Gospel Music Channel reality show America Sings. In January 2012, they performed in the London A Cappella Festival. They are known for building humor and choreography into many of their live performances. An annual tradition is performing with the Chattertocks in their annual concert, "Smoked Salomon," which occurs every September in Salomon Hall on the Brown University campus. Their sister a cappella group is the Smith Smiffenpoofs.