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| It shows: | A piano tone in the simply bowed octave |
| This is what you see: | The tone floats in space
as a dark blue, shining ball in front of a black background. Higher tones change their colour to yellow, small balls. Very low tones are black and have a rough surface, and they are flatter. Only from the low A on the piano tones become spherical and smooth. |
| What I could not show better: | The tone shown here is a little too rough, the superpositions in the foreground are a little too intense; they should rather look like light violet shadows. |
