This is «So-So Solo»—the chillest, fastest, and easiest calculator for guitar pentatonic scale and natural scale. It’s everything a newbie needs to shred some solos and get the hang of finding notes on the fretboard. All you gotta do is hit play on a backing track or your fav song, select the key chord of the song above (I’m guessing you already know what a song key tone is, right?). Then, just start noodling around with the notes on the fretboard below—no matter what order you play, boom, it’ll magically sound good with the music. Rock on!