Saturday, December 5 at 5:30 p.m. on WPBT2

The a cappella phenomenon Straight No Chaser, the 10 men whose quirky version of “The 12 Days of Christmas” is a YouTube sensation, presents an entertaining evening for everyone. The special includes material from their new EP Six Pack, holiday favorites from their new album Christmas Cheers, including “The Christmas Can Can” and “Hey Santa!,” and, of course, the song that started it all: “The 12 Days of Christmas.”