https://www.submithub.com/ - "SubmitHub is the easiest way to promote your music to blogs, record labels, radio stations, Spotify playlisters and YouTube or SoundCloud channels."
https://sevish.com/music-resources/ - resources for microtonal music
https://sidedooraccess.com/site/about - potential COVID-friendly online musician streaming site
http://www.bandworld.org/MagOnline/Issue52/100.pdf - a band director's guide to woodwind pitch
Workshops, courses, etc: