yeah, but what if you have permission to use the song? Plus, uploading music onto any coding website has never been a problem. I think that is so because i've always given credit to the person who created it...but, maybe that's because I'm friends with the people who made the song? Actually, it would still create a problem, because I've uploaded songs made by people who i don't know at all, and I've given credit and everything, but i never got into trouble for it. So, I think that clarifies the point that "Yes, you can upload nightcore songs here, as long as you give credit and possibly even a link to where you got it from or the original song, if you nightcored it yourself. You should be fine, then."
"I'm just a slowpoke and a blockhead and a straight up idiot. There's no need to listen to what I have to say, you know?"