Herb raises another important point in how a guitar plays based on how it's tuned. Simply, a well tuned guitar sounds better harmonically, and more pleasing, and will reinforce more playing when it is well tuned. Additionally, a guitar can be tuned to non-standard reference frequencies (standard A=440)that can change the tension in the strings making them easier to fret and bend as well. Tuning a guitar to a lower frequency standard (say, A=439) loosens the strings, and therefore the tension, and viola, it becomes easier to fret and play. Many famous guitarists, including Stevie Ray Vaughn, Jimi Hendrix and others tuned down from a half step to a whole step to make their instruments more playable to their personal styles of playing.

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