Hello,
I've been working with Wordpress, I know about Plugin Development, update and modification, also about PSD to HTML, RESPONSIVE design, template management and development.
I'm also a musician, so I can give you a better point of view about this.
Please let me know a little bit more about the project to give a more accurate price and delivery time, I know this is not a little project, but I can help you get to the stable release you need.