I’ve been using a service named Globex Music for over a year, and to be real I’m pretty happy.
Track submission is straightforward. No extra actions needed.
Tracks get approved fast. Didn’t really wait long.
I contacted support a few times, and they replied нормально.
Payments are working fine. There are options like different methods. Didn’t have problems so far.
I release originals and cover songs. No issues with covers.
Cost is affordable. About $1 per release.
Not my first release there, and no serious issues appeared.
It’s not very popular, but it works.
They also have fast track approval music a partner program. You need to contact support.
In general you can try it yourself. Not perfect maybe, but good enough for me.
If you want, you can join using my link.