The Pentatonic scale is one of the most useful in popular music. Play any of these notes in the right key and you can’t play a wrong note. By adding the “Blue Note” the player can add extra expression and versatility, this is known as the “Blues Scale”. Guitarists refer to this scale as “Playing in the Box”, and it is the one of the first scales to learn when playing a solo, however, to play this scale on a standard harmonica you would have to perfect advanced techniques that could take years to master! That’s where the PentaHarp comes in