Doctrine of the affections
The doctrine of the affections, also known as the doctrine of affects, doctrine of the passions, theory of the affects, or by the German term Affektenlehre (after the German Affekt; plural Affekte) was a theory in the aesthetics of painting, music, and theatre, widely used in the Baroque era (1600–1750) (Harnoncourt 1983; Harnoncourt 1988). Literary theorists of that age, by contrast, rarely discussed the details of what was called "pathetic composition", taking it for granted that a poet should be required to "wake the soul by tender strokes of art" (Rogerson 1953, p. 68). The doctrine was derived from ancient theories of rhetoric and oratory (Buelow 2001). Some pieces or movements of music express one Affekt throughout; however, a skillful composer like Johann Sebastian Bach could express different affects within a movement (Boetticher 2010) .