How do I hide this?

What is this called and how do I hide it? I need to edit the pedal lie underneath it but I can’t select the pedal line because this always selects when I try.

It’s called the System Track, press Alt/Opt+T to Hide/Show it.

That’s the System Track, which you can hide with Alt T. (Or from the View menu.)

… Ninja’d..!

Beautiful. Thank you so much!