I can’t listen mamamoo’s song

There might be regional differences, but these albums do show up for me in the iTunes Store, and in Apple Music without any issue. You can check these: Yellow Flower | Red Moon. The webpage will have a ‘Listen on Apple Music’ & ‘Also Available in iTunes’ or ‘View in iTunes’ link if it is available on at least either these. When following these links, it will tell you if it is no longer or not available in your region. It is up to the artist and record company to determine in which regions tracks are available.

An artist or content provider may have made changes or edits to an album. You might need to remove the album from your library and add it back from the Apple Music catalog.

If some of your songs are missing or the song names appear in gray text

If songs that you bought are missing or the song names appear in gray text, they might use digital rights management (DRM). You need to authorize your computer before you can play these songs.

After you authorize, choose File > Library > Update iCloud Music Library from the menu bar at the top of your computer screen or the top of the iTunes window.

If you synced the songs that appear with gray text to your iOS device from a Mac or PC, turn on iCloud Music Library on that computer and your library should update.

Get help with iCloud Music Library - Apple Support
If you're having a different issue then let us know a little more information. Take care!

I have the same problem and i’ve tried this but it still the same. Helppppp