Well, that answers a lot of his questions. A walkman? Wow. Is this guy from the 1960s? (... probably not. Fast-forwarded tech.)

"It's a cell phone. A computer that makes calls and does a bunch of other stuff." César stops the music after a moment before it becomes a complete distraction, putting it away. "I'll definitely have to hear you sometime. I mean, I'd come out regardless to support my fellow passengers. Your band is here with you?"