NBC'S "THE SING-OFF" CALLS ON AMERICA TO VOTE FOR ITS WINNER AND ANNOUNCES SMOKEY ROBINSON AND FLO RIDA AS SPECIAL GUEST PERFORMERS FOR THE SEASON FINALE AND HOLIDAY SPECIAL

Robinson to Perform on the Live Season Finale on November 28 While Flo Rida Will Perform on the Live Holiday Special "A Sing-Off Christmas" on December 5

UNIVERSAL CITY, Calif. (November 23, 2011) - After 10 weeks of NBC's intense all-vocal competition, "The Sing-Off" calls for America to vote for their favorite group among the top three finalists - Dartmouth Aires, Pentatonix and Urban Method.

The series, which began with 16 groups, culminates with a live finale on Monday, November 28 (8-10 p.m. ET) featuring a special guest performance by R&B legend Smokey Robinson who will be singing his hit song "You've Really Got A Hold On Me," with top-four group Afro Blue.

As previously announced, "The Sing-Off" also is expanding its season with an additional holiday themed live episode "A Sing-Off Christmas" on Monday, December 5 (8-10 p.m. ET) featuring groups from all three seasons including season two winners Committed, season one winners Nota, The Backbeats, Beelzebubs, On the Rocks, Street Corner Symphony and many of the top ten groups from season three. This all-star episode will include performances of holiday and inspirational classics with special guest Flo Rida performing his smash hit and current Billboard Top 10 single "Good Feeling." All three judges will perform on "The Sing-Off" stage with Sara Bareilles and Ben Folds tackling a holiday duet while Shawn Stockman takes on a Christmas classic with previous winners Nota.

For the finale, fans can call the following numbers to vote for their favorite group: 1-877-6SING-01 (for Pentatonix), 1-877-6SING-02 (for Dartmouth Aires) or 1-877-6SING-03 (for Urban Method) or go to http://www.nbc.com/sing-off/vote/ and place their vote for their favorite online. Voters can also text their selection to 97979 noting the number 1 for Pentatonix, the number 2 for Urban Method and the number 3 for Dartmouth Aires. Viewers can vote up to 10 times per method and voting will close on Sunday, November 27 at 10 a.m. (ET).

The momentous live season finale will also reunite the top ten groups who competed this season in an all-girl and all-boy performance. Groups include Afro Blue (Washington, D.C.), The Collective (Nashville, Tenn.), Dartmouth Aires (Hanover, N.H.), Delilah (Los Angeles, Calif.), North Shore (Boston, Mass.), Pentatonix (Arlington, Texas), University of Delaware Deltones (Newark, Del.), University of Rochester YellowJackets (Rochester, N.Y.), Urban Method (Denver, Colo.) and Vocal Point (Provo, Utah).

Host Nick Lachey and judges Bareilles and Folds will also have their turn to perform on "The Sing-Off" stage. The special performances include:

Bareilles performs her single "Gonna Get Over You" with Urban Method, Folds performs his single "Not the Same" with Dartmouth Aires and Lachey performs the 98 Degrees single "Give Me Just One Night (Una Noche)" with Pentatonix

The top three groups will also have one more chance to showcase the vocal skills that propelled them to the finale. The winning group revealed that evening will win a Sony Music recording contract and $200,000.

Prolific songwriter and Grammy Award winner Robinson is credited with 4,000 songs and 37 Top 40 hits including "Tears of a Clown" and "Tracks of My Tears." Robinson also served as vice president of Motown records, writing and producing hits for groups such as the Temptations ("My Girl") and Mary Wells ("My Guy"). Robinson continues writing and recording and tours extensively in the United States as well as overseas.

Over the last four years, Florida-born rapper Flo Rida has become a chart fixture thanks to the blockbuster singles "Low (feat. T-Pain)" and "Right Round," and his recent Top 10 hits, "Good Feeling" and the David Guetta-produced "Club Can't Handle Me." Having sold more than 40 million singles worldwide, he has broken down barriers by uniting millions of fans of pop, hip-hop, and club music around the globe and establishing himself as an international, genre-busting superstar in the process.

Hosted by multi-platinum recording artist Lachey, "The Sing-Off" is a weekly competition featuring the nation's best a cappella groups performing chart-topping songs for celebrity judges Bareilles ("Love Song" and "King of Anything"), Folds (Ben Folds Five) and Shawn Stockman (Boyz II Men). The winning group receives a Sony Music recording contract and a cash prize of $200,000.

"The Sing-Off" is produced by Joel Gallen's ("America's Best Dance Crew") Tenth Planet Productions, Outlaw Entertainment and Sony Pictures Television. Gallen, Deb Newmyer ("The Ugly Truth"), Sam Weisman ("George of the Jungle") and Josh Greenberg ("America's Best Dance Crew") are executive producers.

For embeddable clips and full episodes from "The Sing-Off," please visit NBC.com's official show site: http://www.nbc.com/sing-off/

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