Really great example of how to build indie projects. You built a solution to a problem you've personally experienced, and you solve it for others who may face the problem. Congratulations, good work! Also, site is very clean. I would give a try if I were making music.

You maybe able to target a wider audience given your product is now mature. If you are willing and able to scale, maybe a SEO / Marketing specialist will be helpful in taking it to the next level.