[He notices the hesitation, but he's not quite sure if it's because he doesn't know how to play or just doesn't trust his own ability. Knowing Karamatsu, it could be either.]

I have a guitar on hand, that's why it was the first intrument that came to mind... if you need some sheet music, I can provide that too. [He pauses.] You're rather young, though- would you need help reading it?

[Can you tell how much he wants to teach someone music because this is Dodger's dream.]