是那只那个很舒缓的吗？还有别的男声、应该是《 fa la la》Justin Bieber & Boyz II Men一起唱的
歌词 ：
It is a time，of year you can give it
Give it give it give it all
One through the note your list you can get it
Get it get it get it all
Make your wish tonight
When you open your eyes
When the lights go bright girl
I'll be right there
Baby you deserve everything you want
It's your night ohhh
Wanna put my ear to your chest girl
Baby I hear melodies when your heart beats
Baby it sings to me like
Fa la la fa la la
Baby I hear melodies when your heart beats
Baby it sings to me like
(fa la la)
Know that it's christmas time
You got on my favourite treasure
You're looking looking looking good
Snow falling on your hair and I don't Idon't
Wanna get it off
Even the stars in the sky can't outshine your eyes
Wanna be your biggest gift
Baby you deserve everything you want
It's your night ohhh
Wanna put my ear to your chest girl
Baby I hear melodies when your heart beats
Baby it sings to me like
Fa la la fa la la
Baby I hear melodies when your heart beats
Baby it sings to me like
(fa la la)
Know that it's christmas time
I'll take your heart with boughs of holly
Fa la la fa la la
Baby cuz you're the reason to be jolly
Fa la la fa la la
I hear melodies when your heart beats
Baby it sings to me like
Fa la la fa la la
Baby I hear melodies when your heart beats
Baby it sings to me like
(fa la la)
Know that it's christmas time
Fa la la fa la la
Like christmas
Know that it's christmas time
Fa la la fa la la
Know that it's christmas time...
Love you baby
参考资料：自己回答