E.T.A. Hoffmann (1814) " ... the secret relationship between light and sound is mani- fest; both light and sound take shape in individual forms, and in this way the solo player and the singer become the euphonic melody ! - ... The complete freedom to play, the absolute con- trol over the instrument, so that there is no struggle any more with the mechanical means of expression, but the instrument becomes an immediate, unconstrained organ of mind; that must be the ultimate goal the performing artist strives for; ...it has become the artist's organ in a way that the sound reflect every- thing that the mind experienced, without applying any mechani- cal force, as if by itself."

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