With Masters in Music, you should be able to command at least $50 an hour, which is horrendously below the $14 an hour you're currently paid. My grade 8 piano lessons already costs me $65 an hour, and I know many more students who pay at an even higher rate.
My frank opinion is that you should at least be securing $5000 a month. You might want to consider private music tutoring if you want to triple your pay.