It sounds kind of Halloweenish and it's inturmental, i know its very popular and more than likely everyone has herd it but don't know the song I think a famouse composer wrote it and played it on a piano or violin
If it helps it goes Na Na Na Ne Na Na Ne Na Na Na Know that i see it smelled out it probably doesn't make much sense But that's all i got.
Flo Rida Feat Wynter- Sugar
Hopefully this is the song?