Do you listen to your music with your eyes open or closed or a combination of both?

Both - it often depends on the music.... 

@sfgak 

I am an amateur musician, and when I play guitar, it is often with my eyes closed. I find that I can “visualize“ the fretboard better with my fingers than with my eyes.

I wish I'd gotten into that playing habit, but after 50 years, that's a big ask. Looking at the fingerboard is definitely not good for my neck so I'm currently experimenting with postural changes to see if I can lessen the negative impacts. 

I find when listening to live music, I often close my eyes. Not so much, when listening at home.  I can only conclude there are typically more distractions in a live venue.  

Looking at the fingerboard is definitely not good for my neck so I'm currently experimenting with postural changes to see if I can lessen the negative impacts. 

@stuartk Just don't end up like this:

Lights off, eyes closed. I find that my sense of hearing is enhanced when my sense of sight is removed from the equation. The background is blacker, the "tweak" is free and the speakers actually disappear.

@winoguy17  +1