I found a stream if you want to hear it
The part where he talked about the recording is from 24:03 to 24:32
Here's a translation of that part
Speaking of that, that's right, recently, I went to sing!
As for what I sang, a song!
At a recording studio. In Victor.
The studio where Kuwata Keisuke-san did the broadcast for Kouhaku.
I went to do a recording there.
Eh? What's wrong? This atmosphere.
Ah, was this something I shouldn't have said at this point in time?
That's, well, what's wrong with saying that I did something that I did!?
What am I snapping back for!
Ahaha Kimura, always the one breaking conventions