Depression manifests itself in many ways. Whether diagnosed or not it is a very real and debilitating disease that is nearly impossible to accurately describe to those who are unafflicted. Fortunately there is one outlet that humans have used for thousands of years that portrays these types of intangible emotions: art.
Emo is a word that has come to mean so many things to so many different people, so to use it in popular musical discussion is to invite confusion. Any label that is invoked to speak of Rites of Spring, My Chemical Romance, Cap’n Jazz and Foxing is one whose use as an adjective is majorly in question.