Planning for product

I'm a scientist turned musician from the Boston area. While I understand my story will be unique to me, I'm wondering how defined I should make my product. I have a business coaching product currently that I have been selling which focuses around building a music teaching business. Obviously, a lot of this stuff can be applied to any new business. 

I would like to redo that program for this course. Is it better to make it more generalized for a larger audience or do I keep it targeted towards musicians/teachers?