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

I listen with eyes open. At live shows, I have eyes open because part of the experience is watching the musicians interact with the audience and each other. I wear glasses and have tried with/without. There is a perceived positive difference without but not enough to require going full-time without. YMMV

Closed.

Improves all aspects of sound quality.

Who needs glasses when the mind has perfect vision....;)

@asvjerry , . . . he’s outside looking in . . .

Maybe I am the odd man out.  I find it best with my eyes open.  I feel as though I am watching the musicians on the sound stage.  Location and depth of instrument placement, the main/front singer and the backup singers' locations.  It just all seems to come together better when I am watching the music unfold directly in front of me.  And of course, I sometimes drift off a bit, my eyes close, and I definitely enjoy that too.  Watching the music, along with listening to it, is part of the total experience.

Open. Staring at the hanging bulb over the turntable. Because LEDs sound bad, it’s a 60w incandescent, and I know that one day, it’s going to burn through the plastic and fall on the cartridge.