Fretboard Heatmaps is a nifty little website that shows how often a specific guitar fret is used by a band. You can see such bands as Metallica, Slayer, Joe Satriani, Steve Vai, B.B. King, and many more, simply by clicking the link above. It’s a pretty fun way to spend a few minutes, especially when you see just how spread out the notes are depending on the musical style (metal is almost primarily near the headstock while jazz is spread out a bit more). Enjoy!