The Slinkys became the industry standard, and to this day, is still the best-selling string — they currently top Amazon's best-selling strings chart.

Use our acoustic guitar chord charts - from basic open chords to the daddy of altered tunings and many points between - to build your musical vocabulary and hone your own voice on the acoustic guitar.

There are a couple of ways to tune your guitar to perfect 4ths. You could tune the bottom four strings down a half-step, or you could tune the top to strings up half a step to C and F respectively.