He's definitely making a 'you know what you did!!' kind of face at Tidus. Because Tidus knows what he did! PAH!! (As Tidus would say.)

"Well, I guess that means you'll just have to try listening to some things." Calm things, thank you very much.

Also yes, Inigo isn't sure what music he likes either, but he will always put Taiki first! Especially since Taiki deserves to have something nice for once. Like finding music he enjoys.