Justin Bieber Previews 'Mistletoe' On Tour

Teen singer debuted first single from Under the Mistletoe Christmas album at Rio concert Wednesday night.

Christmas came early for Justin Bieber fans in Rio de Janeiro, Brazil, on Wednesday night. The teen star played his forthcoming Christmas song "Mistletoe" for his adoring fans abroad.

The singer, who is currently on tour in South America, finally gave fans an idea of what his November 1 release, Under the Mistletoe, will sound like.

In footage posted at DirectLyrics, Bieber told the crowd, "This is the first time anywhere in the world that I'm playing this, so this is special. This is just for you."

The song opens with jingling bells before a guitar and bongos kick in for the reggae-laced holiday tune, with Bieber singing, "It's the most beautiful time of the year." This marks the first preview of Bieber's holiday album. Later in the song he sings, "Word on the street's that he's coming tonight/ Reindeers flying through the sky so high."

Things get a bit more romantic when he sings, "Under the mistletoe with you/ Shorty, with you/ With you/ Under the mistletoe." The song is full of holidayisms, like when Bieber sings, "Gathering around the fire/ Chestnuts roasting like a hot July/ I should be playing in the winter snow/ But I will be under the mistletoe/ With you."

He also keeps it sweet when he sings, "I don't want to miss out on the holiday/ But I can't stop staring at your face/ I should be playing in the winter snow/ But I will be under the mistletoe/ With you."

After the show, Bieber tweeted, "That crowd was RIGHT TONIGHT!!! RIO WENT HARD!! CRAZY SHOW and ENERGY TONIGHT. SOLD OUT STADIUM STATUS!!! BRAZIL!!!! #HYPED oh yeah ... and i sang a little bit of #Mistletoe tonight."

The single officially drops October 18. Bieber shot a video for "Mistletoe" late last month. The album itself will feature collaborations with Mariah Carey, Boyz II Men, Usher, the Band Perry and Busta Rhymes.