General theory: is there meaning in all artforms?

Text:

*Aristotle. Poetics. Mineola, New York: Dover Publications, Inc., 1997.

*Additional text: Modes in literature

Music

Ludwig Van Beethoven (1770-1827)

Symphony No. 3 in E flat Major, Op. 55 "Eroica"
Selections: 1. Allegro con brio, 2. Marcia funebre; Adagio assai

Modest Mussorgsky (1839-81)

Pictures at an Exhibition
Tuileries
*Ballet of Unhatched Chickens
*Bydlo (Oxen)