The Sing-Off Stagione 4

La stagione 4 di The Sing-Off è stata trasmessa su NBC da lundi 9 décembre 2013 a lundi 23 décembre 2013. È composta da 7 episodi, il primo dei quali si chiama "The Sing Off Is Back!" e l'ultimo "4th Season Finale"..

"The Sing-Off" is a one-of-a-kind battle of voices that features the country's top a cappella groups performing popular songs in a way that viewers never heard them before. There's no lip-synching, back-up bands or safety net. They'll be singing for America's vote with the winner walking away with the ultimate prize -- an Epic Records/Sony Music recording contract.