All I Want For Christmas Is You by Mariah Carey (Roblox Dan's Karaoke) 

Play Dan's Karaoke in Roblox Today!
roblox.com/games/15599653678/Dans-Karaoke
By a Filipino Game Developer, Dan's Karaoke is a unique Roblox experience that features interactive karaoke machines that you can sing and listen songs from it.
🎹 This Game Uses Roland SC-55/88 MIDI to play an instrument and for the best Karaoke Experience!
🔨 This Is a User Generated Song, So Don't Expect Things To Be Perfect.
💔 Issues With The Video? Contact Us In Our Discord Server!