Mariah Carey, Fifth Harmony to appear in YouTube holiday special

Washington D.C. [USA], Dec. 20 (ANI): 'Queen of Christmas' Mariah Carey along with a slew of other celebs including DJ Khaled and Boyce Avenue is starring in a new YouTube special titled 'The Keys of Christmas'. In a newly released trailer for the special, the 46-year-old pop diva serves as a kind of 'Ghost of Christmas Past', helping YouTube musician Rudy Mancuso sort out his priorities. Mancuso is seen having a memorable night while going through a dramatic breakup, encountering his 'Guardian Angel' (Khaled) and coming face to face with a horned devil. The ladies of girl group 'Fifth Harmony' will also be joining Carey in the YouTube Red's special edition. Other stars appearing in the special include Ciara, Alex Aiona, Nicky Jam and Bebe Rexha. Towards the end, Carey takes the opportunity to sing her Christmas classic 'All I Want For Christmas Is You' amidst the silent snowfall. 'The Keys of Christmas' debuts on YouTube Red today.(ANI)