Korean Comic MV

Hi~
I would like to recommend to you a one music video.
This MV is very funny, like a Gangnam style.
In this MV, Korean comedians sing in with Korean language using/with a French accent.
They sing a song acting French accent.  ("using" or "with" work in the previous sentence. I combined the two sentences because it flows better)
Even Koreans need subtitles to understand what they say.
Have fun!

https://www.youtube.com/watch?v=BT_5IlUtc4E

*They really did have a French accent. It sounded funny with the Korean language. I took "language" out of your sentence above because the word sing already implies that you are talking about language (not a korean person or a korean object etc.)