I'm wondering about this too. I just found out the "Classical" genre is not available when using TuneCore:
https://support.tunecore.com/hc/en-...327-Does-TuneCore-distribute-classical-music-
DistroKid doesn't distribute Classical to iTunes/Apple Music:
https://distrokid.zendesk.com/hc/en-us/articles/360013647833-Do-You-Distribute-Classical-Music-
It doesn't look like this is a problem with CD Baby.
MusicDiffusion might be another option for distributing music under the "Classical" genre, but the company is new.
https://dartmusic.com/ (Dart Music) attempted to be the solution for Classical but the company failed.
"
CD Baby, Inc. is the largest online distributor of independent music in the world. The company has been described as an "anti-label" by Tracy Maddux.
[2] CD Baby is the only digital aggregator with top preferred partner status with both
Spotify and
Apple Music,
[3][4] and it is home to more than 650,000 artists and 9 million tracks that are made available to over 100 digital services and platforms around the globe.
[5]"
"CD Baby has been around the longest. They were the first non-label company to offer ‘open to all’ distribution to iTunes back in the day."
"They have been around so long that you can feel at ease that they’re not going anywhere."
"CD Baby is leading the front in the “one stop shop” business for DIY musicians."
"Word on the street is that many artists have been fleeing Tunecore for DistroKid and CD Baby recently. There isn’t much incentive to work with Tunecore anymore."
I would hesitate going with DistroKid though. See, for example:
CD Baby stands out as the best (maybe the only) choice for distributing music under the "Classical" genre. I would go with them.
Based on reviews, they come across as the best choice regardless of genre.
I've released 2 albums (acoustic piano based) via Soundrop. Smooth registration/upload process, and they offer a broad range of platforms (Apple Music, Spotify, Amazon Music, YouTube Music, Deezer, Google Play)
Soundrop is meant for cover song distribution, not original music.