The Sing-Off Kirstin Maldonado: I love how Pentatonix inspires young singers 07/03/2018 Kirstin Maldonado is thrilled Pentatonix is inspiring fans to start a capella groups of their own. Read More RELATED NEWS Kirstin Maldonado: I love how Pentatonix inspires young singers'A Pentatonix Christmas Special' featuring Reba McEntire and Kelly Clarkson to air on NBCNick Lachey and Vanessa Lachey welcome baby No. 2 into their family TAGS: The Sing-Off Demi Lovato Bruno Mars Ed Sheeran Charlie Puth Camila Cabello Kevin Olusola Kirstin Maldonado The Sing-Off