Replying to Music service that doesn't suck balls?

Me and most of my friends use spotify, and most of the time, it works. But all of us are big rap fans, and for whatever reason spotify can't combine local files (from mixtapes) and files downloaded from spotify, even if they're by the same artist, and the local files are named perfectly. From what I understand, google play has the same problem

I understand the problems with letting a service control mixtape distribution, but matching text and adding songs from the same artist together seriously can't be that difficult.

Does anyone on here use a service that will let you, for example, have Acid Rap (local) AND the remix of Family (downloaded from the service) both filed under the artist Chance the Rapper?