I gotta admit, you've got to be good enough to be able to work with these guys, but if you're serious about your music, go ahead and reach out to them...
They work only with top names or really talented musicians, so if you got a contract with them, you're probably one of them
I worked with them on my album, they carried out a pretty intense pre-launch campaign before we actually released it. I don't know how streaming services really work, but I did pretty good and i'm preparing my music video now to hopefully work with them again. Also got cool PR placements, radio interviews and stuff like that after the launch...