It is well known that if you want to get different results you need to do something you haven’t done before. To move quicker than your competition and work a lot more efficiently than them, you need to take some things into consideration before deciding how you are going to promote your music.
Why should you limit your niche and how can that be more profitable?
If you sell something to EVERYBODY you end up selling it to NOBODY. By EXACTLY defining your target audience you already have more chances of success than somebody who hasn't done this first and starts promoting right away.
The reason is, your music will be targeted easier and your listeners will love it. Find a niche where you can dominate as opposed to competing with EVERYONE in the music industry.
Needless to say if you got this figured out, promotion costs (and in the costs we include TIME as well, not only money) will be lower because you know where your audience is, what they are looking for and you don’t waste your time and money promoting in places that aren't beneficial for you.
Don’t be the small fish in the big pond, be the biggest fish in the small pond!
It is important to be an absolute master in your domain. Don’t waste time by trying to develop abilities that you are not good at to please people.
Find out what you are good at, you surely have an idea about this up until now, and develop them to the point of mastery, it takes less time and you will find it a lot more pleasurable and feel that you are "on your path".
Stop doing what everybody is doing and stop wasting time to please everyone. Know who are you promoting your music to, understand the power of Social Networks, forums, YouTube, and other sites.
Establish your target audience and start promoting in your niche. I promise that you will achieve more success doing it this way.
In other words don’t just invest and hope for the best but figure out carefully what you are good at. Find out who is interested in listening to your type of music and promote in places that are already filled with these people so there is a much higher rate of converting them into real fans.