Mr. Doradora [Super Junior VS U-Kiss] (MASHUP)

To all Kissme Elf out there! I listened to Doradora this morning. And then I started humming... ! Hahahah that’s how I made it. I didn’t change any pitch, I just changed DORADORA speed. It took 4 hours for me to make this. What do you think anyway? I’d like to see your comment!