Components
Phonograph Music player is an open source project used for playing audio files.
Proposal
I propose for the developers of Phonograph Music player to make it possible for users to be able to put their playlists on autoplay where songs in the next playlist will start automatically instead of going through the stress of unlocking their devices and going to the music application first before it can be achieved.
Mockups / Examples
An "autoplay" option should be added to playlist in settings and a user will have an option if to turn it on or off.

A user should add different playlists of his/her choice to "my playlist" so that the next playlist can start immediately the previous one ends.

Benefits
This feature will only make Phonograph Music player interesting because users will find it very easy to use. It will reduce the way users open and minimize the application just to change to another playlist especially users who play music all night. This option will help them do the work they've always done manually automatically easing the stress.
Posted on Utopian.io - Rewarding Open Source Contributors