Is this a recording magic? or real?

[paul.dines05]

Listen to the music part.

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

The video is all about challenging a famous bass youtuber Davie504.

But this boy, Gai Tadasu slapped his bass on the violin.

Is this real? Or is this a joke using recording magic?

[junmendoza7777]

Ive heard of hin from other groups as well.
at first I also think it's fake but check out his other video
https://www.youtube.com/watch?v=DRWZldftsCA
https://www.youtube.com/watch?v=DRWZldftsCA

he practiced it well on his violin and of course, a violinist (and other classical fretless instrument) as used in playing the right notes without the aid of frets