So he invariably asked to have a second piano onstage, because midway through a recital Liszt's powerful playing would result in broken strings and an instrument that was hopelessly out of tune and quite unplayable.

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He's added several strings to create a seven-string instrument, and has created the first all-ngoni group, featuring four different-sized instruments, including a bass ngoni, also his invention.

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Given the varying width of real guitar strings, it's much easier to tell what frets we're pressing (and which strings we're finger-picking) on a real instrument without having to look down.

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