Donate musical instruments to charity

The simple, digital BOSS DD-7 is small, durable and has the ability to tap delay time very accurately. Another unique pedal, which has its own sound entirely, is the VOX Delay Lab, which offers a pitch shifting delay mode to really turn your signal upside down! It will add one octave up to the note you are playing as the first echo you hear. The second echo you hear is an octave up from that, and so on… It’s such a dreamy swarm of tones, you should give it a try at your local guitar store sometime! As much as I love this pedal, it’s actually enormous, and no longer fits on my board, so for something a bit more compact you can try the BOSS PS-3.

The ancient Greeks figured out that if you have a bunch of strings, it sounds really good if you tune them according to the frequency ratios you get from the natural overtone series. In such tuning systems, you get all your notes by picking a starting frequency, and then multiplying or dividing it by whole numbers. The good-sounding (to Western people) note combinations are the ones derived from the lowest harmonics — the ones that have you multiplying or dividing by the smallest prime factors: two, three, and five.