Maybe in iOS 13 we’ll be able to add songs to our music iPhone libraries without having to wake up a Mac or PC running iTunes. Until then, there’s no way to listen to songs downloaded from Bandcamp, or exported from GarageBand, alongside the rest of your music collection.
But there’s a workaround. Vox is a slightly confusing music app that combines your built-in Apple Music library with your Soundcloud, Spotify, and other services. And it will also let you import any audio file, and then add it to playlists and so on. Let’s check it out.