From his youtube:

"I had the privilege of going to KCon 2017 in New York last week and although I wouldn't have classed myself as a HUGE K-Pop fan, this has changed my mind, it was absolutely INCREDIBLE.

I met some of the nicest people, heard some of the greatest music and just had an unforgettable time. 

At one of the concerts that I went to, CNBLUE performed and they just kicked ass. They really took it to a whole new level.

I can't speak ANY Korean at all, but I simply had to cover this song. So, for all of you non-Korean speakers, this will probably just sound pretty cool, and all of you Korean speakers you will probably be laughing your ass off at my words, which are more likely not even close to real words haha!"