Sing to Kadaj? What was this? Some kind of date? The Corinthian gave Ai a rather disapproving and mildly disgusted look. He was betting, if anything, Kadaj wasn't in this for the singing. And he would prefer to not have to have his own ears assaulted by her voice. It was probably annoying. That was one side of the argument, the other went back to the fact that Ai knew Daniel. So, outright condescension and disgust would probably warrant him an admonition.

"...we were on our way elsewhere," The nightmare said, without bothering to sound nice. He would be civil but he felt no need to try and be nice to these people. Especially not Kadaj, who the Corinthian was beginning to suspect was too conniving for his own good. It was in the way that the other spoke, and... the nightmare did admit that his own general anger was clouding his rationale.

Fuck rational thinking.