A group of guys who sang together in a college a cappella group reunite 15 years later to perform at a friend's wedding and discover how their lives have progressed -- and in some cases regressed -- since their college heyday.

• Shut Up and Sing LLC
• David Harbour
• Mark Feuerstein
• Molly Shannon
• Reg Rogers
• Alexander Chaplin
• Chris Bowers
• David Alan Basche
• Samrat Chakrabarti