The massive success of the a cappella quintet Pentatonix may look like a whole new thing for pop music, but it’s really one of the oldest things there is. Long before there were million-dollar ...

World-renowned and San Francisco-based Chanticleer, the 12-member a cappella men's vocal ensemble ... and the group will continue to perform the early music that is their trademark for the ...

but the common thread is that they all have a passion for service and a cappella. “The best part of the service is when the audience is really engaged with us. They’re bopping along to the music as we ...