If you have problems with the chords and octaves on a Lee Oskar you will have problems with chords and octaves on a piano or a guitar tuned to a tuner since they are tuned to an equal scale.The old harps were just tuned, so an equal tuned harp won't quite cover the old blues classics, especialy the 5th hole.
If you want to play traditional gamelon music you will need a completely different tuning.
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