You probably saw this incredible Shakira cover that went mega viral earlier this year.
This is Jack Remmington, the group's president, and no wonder he looks so happy.
Remmington told BuzzFeed News that the group first began in 2000.
It began because an American student came to Oxford and realised there was a lack of a cappella. Every year we hold auditions in Freshers' Week. We rehearse three times a week, for two hours at a time. In the holidays we tour, but not in term time.