What Does a Composer Do?
I'm cheating. This is the title of a video I have just watched.
And I thought some forum members might be interested in these thoughts.
From my experience (M.Mus. in Composition) "what a composer does" is find a remunerative position in another field.
An exception may be composing for movies and TV documentaries and drama. I know such a person, formerly head of music at a fee-paying school, who left teaching to become a full-time composer in those fields, quite remunerative I understand.
A composer composes whether he makes money or not.It is who you are after all.
Madeye Hobbit is spot on.