Kanan had the sneaking suspicion that he was being laughed at, yes.

Hey, I can do that. When this week? Or have you not picked a date yet?

Where he was standing, karaoke was either some kind of activity one could do for fun in public, or some kind of drug that one probably shouldn't, and he was kind of dying to figure out which it was.

If he knew it involved singing, he might've tapped out immediately.