I see what you're saying. Thanks for clarifying.

When I look back on my school days, I did see many, many students who would study with their iPods, CD players, or cassette players. I would argue that if music was a problem for kids' concentration, then kids wouldn't use music to study with. If anything, music seemed to help them block out the environment and focus on what they needed to do. All they had was their music and one other thing to focus on (homework). So, I really do think it's a natural thing to feel that listening to music improves concentration/focus. I don't think you're really abnormal in that sense, but obviously that's my (uneducated) opinion.

Btw, if you really think about it... People are always listening to something, whether it's music, TV, YouTube, radio, video games, etc.. People get bored without auditory stimulation. So, sure, it's certainly possible you listen to music more than the average person, but in the grand scheme of things, you're just choosing to listen to music more than someone who chooses to listen to the TV or YouTube. I really, really don't think you're abnormal for always listening to things, or for relying on music for focus when there is lots of research to support the link between music and focus. I don't think it means much (or anything) that you need music to listen to things.