Through instrumental music, I'm allowed to come up with musical ideas that allow the listener to create their own impression of my song. If you add lyrics about a girl in the song, the listener doesn't have a choice of what the song is about, it's told to them. My musical writings allow me to express anything. It's easier for me to tell a story of something I've encountered this way then to verbalize it. And my feelings are explored more in my compositions compared to what I could ever say in a few sentences.