Affekt

The doctrine of the affections, also known as the doctrine of affects, or by the German term Affektenlehre (after the German Affekt; plural Affekten) was a theory in musical aesthetics popular in the Baroque era (1600–1750). It derived from ancient theories of rhetoric, and was widely accepted by late-Baroque theorists and composers. The essential idea is that just one unified and "rationalized" Affekt should be aimed at by any single piece or movement of music, and that to attempt more was to risk confusion and disorder.
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n. feeling, sensation, perception, emotion, compassion, strong feeling, sentiment