First Look: 98 Degrees, Pentatonix Perform at “The Sing-Off” Finale

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The world will have to wait until Monday to learn who wins season four of NBC’s “The Sing-Off.” That does not mean we cannot enjoy a slight glimpse into what will be going down.

NBC announced late last week that season three winners Pentatonix, host Nick Lachey’s boy band 98 Degrees and Pat Benatar (with Neil Giraldo) would be performing on the season four “Sing-Off” finale.

In hyping that finale, NBC shared photos of the three guest acts. Those are available below.

Airing from 9-11PM ET on NBC this Monday, the fourth “The Sing-Off” season finale will reveal the latest winner of television’s only a capella competition. Remaining in the race are Home Free, Ten and Vocal Rush.