Straight No Chaser, the acapella group that became a viral sensation with its take of "The 12 Days of Christmas", will ...

Few people were aware of the 1994 single “Insomniac” by the rock duo Billy Pilgrim, and it quickly sank into obscurity. But a cappella groups can’t stop singing it. We set out to find an explanation.

We all love hearing our favorite idols show off their vocals without music, but there’s something particularly special about listening to a group perform in full a cappella style, with members ...