Pentatonix has every chance of becoming the first a cappella group to truly go mainstream. The five of them are a formidable musical force, creating full, interesting arrangements that sound as good (and, on occasion, better) than the songs they're covering.
The third season of "Glee" wrapped up this week with a cliffhanger and enough dazzling musical numbers to make you wish you'd stuck with your element...
Once upon a time, Fox's musical take on a high school show choir was funny and poignant. Now, as its third season winds up, it has evolved into a string of Sunday sermons accompanied by the voices of Barbra Streisand, Michael Jackson, Lady Gaga and others.