My Suggestion For The Application Of The Shuttle For Your Convenience Music Player Users

Components

Shuttle's Music Player is probably the music application on android with full features and best
that will work in your study the behaviour of the preferred listening to music, often played and presents estimates of the playlist of music that you most like.

The shuttle Music Player provides some interesting features that are required by a music player application.
The following are features that can be enjoyed by users of Shuttle free version:

Create playlists (playlist)
Classify the songs fit the genre/artist/album
Set the song into a ringtone directly from the application
Displays song info
Share the songs to other applications
Blacklist (hide song from list)
Whitelist
Manage queues
Displays song lyrics
Download art work (the album cover image) automatically and legally
There is a choice of theme (light and dark mode)
Equalizer settings (available 6 channel) to maximize your audio
The widget can be customized
Sleep timer
Smart shuffle
Gapless playback
Support last.fm
Ad-free (no ads)

Proposal

For the application of shuttle music player I's suggestion to add the button input.

Mockups / Examples

Screenshot before application of shuttle dashbord music palayer before add the input button

screenshots after the Add button inputs, it can be adjust by the designer, so it appears the more dynamic

Benefits

By adding the input button, the user can easily report every time I encounter problems to the designer so that users will be more comfortable.