it's slightly relieving to hear you experience similar and find it normal

yes to it getting in the way of sleep and yes to probably anxiety related

I used to listen to a lot of music and play a few instruments as a hobby, but have had no time to in recent years. I consider myself an incredibly musical person and wonder if recording the main offenders would expel them. I would love to find the time to turn this affliction into a creative process, both as a hobby and possible therapy