Not wanting to think about something makes you want to think about it all the more -- it's the same with looking. A pull in the eyes they makes Tidus want to search out the windows, stare out of each one. He doesn't, but it's an annoying desire. Do the thing that's absolutely the worst idea ever.

"MUSIC? MUSIC'S GOOD." Roland's asking him right? But what a good conversation subject, let him get into it- "THIS IS THE KIND OF STUFF THAT PLAYS IN THE GYM I WENT TO. IT'S DIFFERENT, RIGHT INIGO? WHAT DO YOU THINK ABOUT IT? YOU WANNA SWAP EARPIECES ROLAND AND HAVE A LISTEN?"

This is their life. But at least there's a nice break in that space between carriages, if not entirely big enough to fit three people in at once.