You hear it on songs like Pink Floyd’s “Hey You”, “Dust in the Wind” by Kansas, and the Stones’ “Wild Horses”, not to mention countless others.
Specifically, High Strung/Nashville tuning uses standard 1st and 2nd strings, and one octave higher on the 3rd, 4th, 5th, and 6th strings. Strings 3 through 6 are actually the ‘octave strings’ from a 12-string set. High quality string manufacturers like D’Addario make dedicated High Strung/Nashville string sets. You can purchase individual strings as well.
Typical gauges (high to low) are:
High Strung or Nashville tuning is most frequently heard on acoustic guitars and is commonly used to “double” a standard-tuned acoustic. Strung in this manner, a guitar takes on an entirely different character. It sounds bright and almost piano-like. Capo up at the fifth fret and the guitar begins to sound like a harpsichord.
At about $5 a set, High Strung tuning is the simplest and lowest–cost change you can do to enable your acoustic guitar to sound like a very interesting and entirely different instrument.
Give it a try.