Trace Adkins, Mariah Carey and Cee Lo Green are set to per­form this month at the Christ­mas tree light­ing in New York’s Rock­e­feller Cen­ter, NBC said.  The even takes place on Novem­ber 28th.  Vic­to­ria Jus­tice, Chris Mann, Rod Stew­art and I1 Volo are also booked to sing.  Billy Crys­tal and Bette Milder will make spe­cial appear­ances, as well. “The 80thannual hol­i­day extrav­a­ganza will fea­ture a Nor­way Spruce from Col­orado that is approx­i­mately 80 feet tall, 50 feet in diam­e­ter and weighs approx­i­mately 10 tons.