Two dancers; a pas de duex.
One takes the lead, now the other.
Graceful, flowing, an interplay of energies.
At once abstract but entirely clear.
Melodies ascending and descending, greeting each other as they intersect.
Intended as a model of composition, it gives pianistic delight to thousands.
A whole universe in miniature.
To hear what I mean, enjoy this recording by a true master pianist: 2-Part Invention No. 14 in Bb major by J.S. Bach
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