Need a paragraph of 250 words (Music)

Write a paragraph on the differences and similarities between the two forms used by Benjamin Britten in "The Young Persons Guide to the Orchestra:

http://www.britannica.com/topic/The-Young-Persons-Guide-to-the-Orchestra

https://en.wikipedia.org/wiki/The_Young_Person%27s_Guide_to_the_Orchestra

The paragraph is intended to be a minimum of 250 words since this is an essay paper. Cite a minimum of two outside resources at the bottom of the submission.