I would advice not to do that unless you are really interested in creating your own music. Those courses are often so dull and boring, since they usually dissect melodies, like Beethoven's 9th, into abstract concepts, devoid of any understanding of the incredible craftmanship of the composer.
Alanchu, do you want to be like this: "Here the crescendo slowly transpires into pianissimo; it is interesting that the composer chose a scale of C-minor rather than D-major in this part of the fugue, hoho"
...oooooor
HERE I AM *DU-NU-NUNUNU* ROOOOCK YOU LIKE A HURRICANE *DU-NU-NUNU* <guitarsolo!>
LOL I am definitely the latter.