Obvious, but have you put flyers in your local rehearsal studios or anywhere else muso's hang out? Offer discounted rates to their users or even a kickback to the rehearsal place (which is perfectly ethical and legal).
Local newspapers (sorry don't know if this works where you are) are always keen on local interest stories, and when it comes to laziness journo's are in a league of their own. So do some PR, which basically entails identifying the appropriate scribbler, finding an angle and giving them a story on a plate. For example you could run a competition for best local songwriter and get the paper to run a feature on it (free demo for the best or whatever). They generally love that kind of stuff.
Otherwise, actively networking, perhaps offering something or other - business is the art of the hustle and you just need to get into that tree shaking kind of mindset.
Good luck