Mark,

I'm so glad you made this post! I experience something similar and have since about 2 weeks post concussion. My boyfriend thought I was just being silly, but I really think the looping thing is what's happening.

If I hear a word, that is associated with a song in my brain, I'll get that line/stanza stuck in my head for hours. Ex. My nephew's pacifier is attached to plush duck that can be attached to his shirt. They therefore refer to the pacifier as his "duck butt." Someone said "duck butt' on Saturday and for the next 3 hours, I had a childrens song I taught in early intervention called "Ducks like rain" stuck in my head.

It's can happen to pretty much any random word, and if I've heard a song with the word in it, I'm stuck for hours.

It so good to know I'm not the only one who gets stuck!