We've had 22 songs licensed by Mood Media which is the largest worldwide provider of "over head" music, i.e., restaurants, bars, etc.
I'd have to check but we opted in all our songs for college radio and had 5 or 6 tunes selected.
If by success you mean money...not much with the college radio as it's like payout for an album upload to the platforms, e.g., Spotify and only pays out when streamed. I don't really see any serious money in college radio at least not for our old school genres.
Mood Media is a different model and pays a relatively small quarterly amount to us.
Additionally we've made around $300 on three songs licensed for different projects.
But with us it's just for fun and ST is cheap. And it offers some validation beyond family and friends
that we are producing some decent music.
Bud