The Puppini Sisters met in 2004 at London's Trinity College of Music, so this is not some separated-at-birth story. But Marcella Puppini, Stephanie O'Brien and Kate Mullins are sisters in spirit and song.
Although classically trained, they are more Andrews Sisters than Andrea Bocelli, and they've just released a holiday CD. On it is the classic carol "O Holy Night," a song Mullins says she holds close to her heart.
"This is just easily one of our favorites -- not just of Christmas, but of all time," Mullins says. "It's one of the most amazingly crafted things."
You can hear the sisters tell stories -- about how they decided on a name, from whom they draw inspiration, how they arrange their work and why they decided to make a Christmas album -- by clicking the interview link at the top of this page.