If you have a chromatic tuner this can be easy. A half a step down is having every note “half a step” down – a half step is an interval and to the guitar it’s a one-fret distance. So, E becomes Eb and so forth.

From the low E to the high E it goes

Eb Ab Db Gb Bb Eb

An easy way to tune down to half a step is to place a capo on the first fret and tune up to standard pitch, then, take off the capo and you’ll have half a step tuning.

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