Thank you for that and there might be a youtuber do that.I'm not sure, but if there isn't... then it's up to you to make it so. Just make sure to let the viewers know that the channel is going to have both. Mine has game reviews, movie reviews, wrestling reviews, unboxings, con videos, and other such things.
I will do that very soon, especially use my music in my gaming videos. But for now, all I do is gaming which is my main niche. I don't believe that making different channels is going to help you grow better, because if they like you then they will watch the videos you upload of music or gaming.Is there any youtuber that do gaming and music in one channel.