...right. [Give him a second while he works out how to explain them.] Okay, so you write music down on a sheet of paper, right? But you still have to play it yourself. Well, a vinyl record is a special kinda record where you can actually record the music being played and not just the notes for playing it, but you need a device to make it work.

[A quiet huff.]

It's easier to show you than to explain, but I didn't exactly bring any of my records with me.