Scenario 1:

The auto play mode can be used for the scene when you are alone. The app will continuously collect the user's voiceprint for analysis and emotion recognition in the background. When the app detects that your mood is unstable, it will automatically pop up a message asking if you want to play music. 

 

 Scenario 2: 

 

And in manual mode, any time if you are sad , angry, you can open the app and play some music, it could be really helpful. When the user is outdoors, the user can choose the manual mode. When you are on the subway or on the way home at night, you may feel lonely or depressed. At this time, you can use the app to listen to some music. When you open the app, all your voiceprints will be recognized, and then recommend some music that will relax you. 

 

Scenario 3:

 

When the user is in bed before going to sleep, the user can choose the automatic mode, the user wants to ease the anxiety of the day, listen to music and fall asleep, the app can recommend music that makes people more likely to fall asleep to help the user relieve anxiety and relax.