A few months ago, I found out that the A Cappella group who do the background music on glee are a London group called the Swingle Singers.
Looking them up, I found out about the London A Cappella Festival. We booked tickets on the spot for their show tonight with another group, the Vasari Singers.
We were by far the youngest in the audience, but we didn’t care! The music was beautiful. A lot of it was original. It amazes me what the human voice is capable of! Highly recommended.