 Even warming up, the Archdiocese of Washington's People Mass Choir sounds heavenly. With just six rehearsals together before the canonization mass, the choir is staying focused under music director Thomas Staley. To be a part of such a historic monumental event is really, it's a tremendous opportunity and it's really exciting. A total of 330 individuals auditioned, but only 90 were chosen to join the People Mass Choir. Staley says that the diversity of members in the choir is symbolic. It looks like the Catholic Church in the United States because it's not just one group, it's a mosaic really of people from cultures that really only know each other in church. Mary DeMiro is singing for a pope for the second time. The St. Peter's Parish Cantor was fortunate enough to be in the 2008 choir when Pope Benedict made his first U.S. visit. Last time when the mass started and 25,000 people started saying in the name of the Father and of the Son of the Holy Spirit, it welled up in me an emotion that you can see now, it's so many people with the same mindset and we're all together for one purpose, is to have the mass and it's beautiful. Here at the Basilica, located on the Catholic University's campus, the 90 voice choir will perform along with four other choirs for the canonization mass. Reporting from Washington D.C., I'm Heather Golden.