Ben Folds, Jewel, Shawn Stockman Ben Folds, Jewel, Shawn Stockman

NBC definitely has a lot to sing about.

The network topped Monday, powered by The Voice with 12.8 million viewers and a 3.4 in the adults 18-to-49 demographic, which boosted the Season 4 premiere of The Sing-Off (8.4 million, 2.4). The Sing-Off was up 26 percent from its Season 3 premiere, which did not follow The Voice.

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