Music Theory

It is taught, today, in the finest conservatories, that the fundamental 
elements of music are melody, harmony, and rhythm.

Yet, when we examine the simplest tune, say, Mary Had A Little Lamb, 
we can easily distinguish changes in pitch, dynamics, speed, duration, 
articulation, rhythm, and more.*

* (for a description of all ten elements of musical texture, and the five 
elements of musical structure, see The Nature of Music )