What are these guys with bowties doing here?

For Ben's birthday this year I hired a barbershop quartet to serenade him. It was hilarious. I had arranged it with his co-workers ahead of time, and they let the quartet and me inside the building. I snuck around the back of the aisle and one of Ben's coworkers walked around the other end of the aisle and told him that there were some people there to see him. I popped out after I heard her say that and although I didn't see his face at first.......I did see his ears..........and they turned beat red. It was adorable! Then he turned around with a huge grin. They sang a total of 3 songs, and did a wonderful job! We finished his birthday up with dinner, gifts, and one of his best friends came over to hang out. I can't believe he is 27! I have known this guy since we were in Jr. High!!