well its not all about what other people want, but rather what do you want. Because you have to understand its your channel, and your talent. I would recommend you figure out what you want, because you need to find your strengths and weakness, if your good at Music, Playing the instruments then thats a strength and you should work on that for your channel as an Idea because you can share your talent and inspire other people in the music industry. If you not good at gaming then I would class that as a Weakness and not spend time building your channel around something your not good at.
Hope this makes sense of the situation and helps point you in the right direction