Welcome to your application Smooth Extra Radio App UK Online, created mainly for anyone who likes to listen to music and entertainment. Our App allows you to listen to the radio live and free throughout the course of your daily life. Main functions of Smooth Extra Radio App United Kingdom : 1. You can listen to live music 24 hours a day (you only need to be connected to the internet). 2. You can know what artist is playing on the radio (you will see the full name of the artist). 3. You can kno