Arlo's music loving

The other day I found Arlo in the office with his headphones on. He looked as if he was listening very intently to something...I tried to just give him his privacy but this went on for over 30 minutes He just looked so cute I simply couldn't help myself and had to get out the camera.....Here is our conversation below;

Mom:Hey bud what ya doin?

Arlo: (pulls down his headphones and looks at me like I am an idiot) Listening to music

Mom: What are you listening to

Arlo: Well, I am trying to skip to Led Zeplin

Mom: Oh, really why?

Arlo: because, They rock harder

How in the world did I get such a cool kid????