Stars line up for 'Sing-Off' finale

UNIVERSAL CITY, Calif., Dec. 17 (UPI) -- Natasha Bedingfield, Bobby McFerrin, Boyz II Men and Smokey Robinson will spice up the finale of "The Sing-Off" in Los Angeles by singing a cappella, NBC said.

Presided over by host Nick Lachey, the live two-hour finale of NBC's singing competition show is to air Monday.

The last installment of the show will also reveal which a cappella group America votes the winner of a $100,000 grand prize and an Epic Records/Sony Music Recording contract.

The finalists are Nota from San Juan, Puerto Rico, the Beelzebubs from Boston and Voices of Lee from Cleveland, Tenn.