I have a question for the composers here.
I'm really getting into composition, and I have a composition teacher.
Now my way of composing is generally fiddling around on the piano and once I get some material that I like, I work it out with harmony, melodic development and all that until I get something that sounds good to me.
A common remark by my composition teacher is that I should "know why I'm composing" and should be able to explain why I do what I'm doing. With this he's aiming at the artistic side of music: the idea or concept or thought behind your creation.
Do you think it's really necessary to always have this conscious idea or concept in your mind while creating music, and if so, what are some tips to be more conscious of this part while composing? Currently I generally rely on emotional reactions when composing, rather than forming images in my head from what I'm composing