Share my own music from Apple music

Hi! I’ve record a bunch of my music ideas on different apps on my iPhone. I Then converted them in Itunes desktop app (pc) and uploaded them to apple music so I conveniently can make playlists, rate them and put in categories and so. It’s my music, why can’t I share it with my songwriting collaborators? Would be an awesome tool. I get, can’t this type of file.