This is by no means original. I saw something very similar to this last week which made me want to play around with some longer exposures. So, this evening, I got out my wife's guitar and my mini-mag light and went to work.
It wasn't until I sat down at my computer tonight that I noticed the theme of music, so this one plays (pun intended) really well into the theme for this week.
7 exposures, stacked together, each between 56 to 10 seconds in length.