The RPM Challenge would like you to do exactly that. It doesn't appear to be a contest, but rather a "challenge" to artists to produce ten songs or 35 minutes of material during the month of February. Hey, I'll admit, it's not the most exciting idea in the world, but I have to agree with this sentiment:
Maybe they don't have "Grapes of Wrath" or "Abbey Road" at the end of the month, or maybe they do—but that's not the point. The point is they get busy and stop waiting around for the muse to appear. Get the gears moving. Do something. You can't write 1,700 words a day and not get better.