'The Sing-Off': Meet Calle Sol, the 'Latin flavor' of Season 4

It's been two years since the last season of NBC's "The Sing-Off" aired, but since then -- thanks to the success of the movie "Pitch Perfect" and to Internet phenomenon Pentatonix, who won Season 3 -- a cappella singing is en vogue again. Zap2it spoke with each of the groups competing in Season 4 to get an idea of what the season will hold. Up next: Calle Sol, bringing some Latin flavor to this year's competition. Nota, an all-male group from Puerto Rico, won Season 1 of "The Sing-Off" in 2009. Now, some friends of theirs from the island are trying to replicate that success in Season 4. Calle Sol, a group of six professional musicians who formed specifically for the competition earlier in 2013, decided to audition after being fans of the show since Season 1. "We'd all been performing in our individual solo careers" for years, explains Craig Cacciola, as solo artists...



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