


I've done the one song per day thing and for certain types of pieces that's do-able. But for other types, like orchestral and hybrid orchestral, it can take several days to get the piece sounding excellent.
I shoot for at least 100 pieces/year and do the math backwards from there. Of course, a client request may expand or contract that number depending on the requests and the deadline.
I do something with my music and/or career every day, even on days I work at my day gig. Consistency is the key to sustained output.
Inspiration is for amateurs, doing the work every day is what professionals do, inspiration is a bonus. Besides, inspiration is more likely to strike when one is prepared for it and the resulting product of the inspiration will end up sounding much more like the "inspired" idea if the craft and chops have been developed consistently. The only way I know to do that is to write every day.
Besides, writing every day helps one to separate the process from the product and to see the pieces as products to be marketed rather than little emotional children to be protected at all costs. There's nothing wrong with being proud of one's work, in fact it's totally necessary in order to keep at it, but at some point that separation needs to happen in order for one to be able to deal with the inevitable rejections that will come in the process of putting those pieces out there.
There's nothing like a hard deadline to help "inspire" creativity!
Just my opinions based on my experience. YMMV.
Mazz