How to Pin Music on Your Android Phone
Most of the music you have in your Google Play Music library, especially music obtained from the Play Store, is actually stored on the Internet, not on the Android phone. As long as you have an Internet connection, your phone can play the music. But when you don’t have an Internet connection . . . silence.
To make your music available off-line, you need to pin it to the phone’s storage. That sounds weird, but it’s a virtual pin so there’s no blood. Here’s how it works:
Display the Play Music app’s navigation drawer.
Choose My Library.
Behold your music library.
Locate the song, artist, or album you want to keep stored on the phone.
Touch the Action Overflow icon by the song, artist, or album.
Choose the Keep on Device command.
The music is downloaded to the phone and made available to play all the time.
Pinned music (stored on the phone) features a Pin icon, similar to what’s shown. That icon can be used also when viewing an album; touch it to keep the entire album on the device.
When you copy music to the phone from a computer, the music is always kept on the device.
To review the music already on the phone, go to the main Play Music app screen. Touch the View action bar and choose the On Device command.