Ok, so I felt ok with finishing up when I had gotten at least one part all the way to the added twenty seconds yesterday. But they were not filled out with all the parts. Today when I pick up work on the string quartet, I first fill out the remaining parts, and then I go to work to add another ten measures.
I alternate between contrapuntal movement and unison rhythm sections. I think it’s a lot of fun, and I guess that was a lot of what I heard in my Mendelssohn listening too.
After filling up the ten measures, I have a floating four measures of just cello line to build off of next time I pull out my composing work.
I’ve heard people complain that they can’t focus long enough to write music. I don’t write for very long stints either, usually. It’s intense while I work on it, but then I have to break it up with something else or my mind starts going to mush.
Also, if someone starts playing music in the background it becomes impossible to keep my focus. So that is out. When I’m writing music it is also difficult to take interruptions. If someone wants my attention when I’m writing, I’ll usually hold up a hand, to show them that I’ve noticed them, but they must let me finish what I’m working on. It’s usually just finishing up a phrase that’s hard to interrupt. And in an Allegro movement, there are many phrases!