Thank you.

Relatively recently one of the guys I work with lent me his electric bass to mess with. I was playing along with a CD at work, with the bass not plugged in (so no sound) and when I hit a wrong note I knew it - I could feel that the vibrations in my fingertips weren't right. Shocked the heck out of me that I could feel the difference in the note on the CD and the one I played.