Unknown histories take center stage as the hitmakers themselves - from ABBA to T-Pain - explore dimensions of pop music you never knew existed.

The mismatched couple hosts a holiday-themed variety hour featuring skits, bits and musical visits from Ashlee Simpson, Brian McKnight and the guys from 98 Degrees, who join Nick for a rendition of “I'll Be Home for Christmas.”

Mariah Carey performs at her old high school on Long Island, featuring special guests 98 Degrees, Jay Z, Da Brat, Joe and DJ Clue.

It's the season for pure Christmas magic in the Canadian Rockies as Tony Bennett, 98 Degrees, and CeCe Winans join Amy Grant for a very special holiday program.

The Teen Choice Awards is a teen awards show presented annually by Fox. The first awards were held in 1999. The program honors the year's biggest achievements in music, movies, sports, television, fashion and more, as voted on by teens aged 13–19. The program features a number of celebrities and also musical performers. The winners are awarded with authentic mini size (182 cm) surfboards designed with a summertime theme. The ceremony has created spin-off teen awards on YouTube.

The Teen Choice Awards is a teen awards show presented annually by Fox. The first awards were held in 1999. The program honors the year's biggest achievements in music, movies, sports, television, fashion and more, as voted on by teens aged 13–19. The program features a number of celebrities and also musical performers. The winners are awarded with authentic mini size (182 cm) surfboards designed with a summertime theme. The ceremony has created spin-off teen awards on YouTube.