Arrow [Q] How to add /storage/extSdCard/Android/data/music to Music player?

I HAVE to use that dir to store my music, beccause that's the only dir that can be written to by 3rd party apps since android 4.4 (yeah great)

Now the thing is that Music player doesn't auto pick it up, even after restart. So, how to add the music from it to the player?