Wow. Two of my favorite Youtubers coming together and making a video, I'm watching the whole thing!
Oh you mentioned listening to songs in your head! I try that sometimes too, and it's great because I get to listen to music without any flaws. Listening to music in your head is so peculiar, it's like visualization but with sound. When I do it I usually do it for a few minutes and get a music sound kinda quiet towards the back of my head, but I realized that if you stay focused on that music sound it will become louder. That's really how hearing works. People with good hearing don't necessarily have better ears, they can just focus on particular sounds in their head. When I would hear the ''vibration'' noise the more I focused on it, the louder it got in my mind. Listening to music in your mind is an amazing concept, and I saw that both Kelli and You do it too!