Here is an app called Popular Music Songs. This is radio live app for listening to popular songs. Popular Music Songs app can be listened to with or without the headphones.
It is free and available on Google Play:

Popular Music Songs is radio online free app that has all those new popular songs that everyone likes.
It has great features:
- Listening to online radio without headphones
- Set timer to play any internet radio and sleep timer so that radio station turns off at specific time
- Save or share music online on social networks such as Facebook and Twitter
- The widget of the app will appear in the notification so that you could control radio fm even when the app is turned off
- Use widget option to set your favorite radio live as a shortcut on your home screen.
- Set favorites to create a list of favorite radio free for quick access
- Choose ‘more’ button to research other radio stations
- Set a radio alarm