Pitch is a problem for a lot of folks when using cans of any sort. You often see pictures of recording artists in the studio with the headphones off..... actually they are holding the cans with one cup pressed to one ear and the other ear hearing the room.

I have, on occasion, also done similar.... with one of the cups half off of one ear to hear my voice when singing.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.