well it really depends on what kind of guitar it is
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instead of tuning your guitar in standard tuning with pitch =
440, you should tune it to pitch = 435, then it sounds excaclty
when you play with taylor swift
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Although there are many ways to tune a guitar, standard tuning
is E, A, D, G, B, e.
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Baritone tuning, 5 steps lower than standard
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Tuning is really a choice. If you want to get the best sound out
of your guitar, then I highly suggest tuning it.