Why you shouldn't ever decide for someone that they're not interested in what you have to offer and why that is not a license to spam people with frivolous requests.

Whether learning a new skill, making something creative, or partnering with someone, starting small is the way to go.

As Seneca once eloquently pointed out, you have to know exactly where you are headed.

What you are offering might already be good enough - this other thing might be the real reason you aren't getting traction in the music business.