So on my days off, I'll put some music on in the kitchen while I do my "chores", emptying and refilling the dishwasher, making lunch/dinner, etc.
I've also been know to have music playing from my bedroom and I'll shower/shave with the door open.
But I don't think I've brought music into the bathroom specifically just to shower to since I was a teenager. I really want to get in and out as quick as possible. Taking a bath, sure music is great, but who fucking takes a bath?