You sound great, English is not my mother tongue either and I had no problem understanding.
Your accent does not pierce my ears, I could easily watch your videos.
The only acceptable music is milling metal and motors.
If I want to listen music I can type a song on search bar.
GreatScott is famous because of the content quality, steady camera, high res, nice explanation with script and nice editing without dead periods.
Focus on content, not marketing.