Fishy?

[Is he making fun of him? Wait. It's Bertie. He's probably not making fun of him. Still, there's that little edge of paranoia that jabs him and makes him believe, briefly, that maybe his name might sound a little stupid in English.]

[Bertie doesn't seem as though he has a harmful bone in his body.]

I like to sing a bit, myself. But I'm still working up the stamina [courage] to get up there tonight. I'm impressed you have it in great quantities.