4U Classic Rock In this application, we find a selection of radios to practice during the day. It is easy to use, you can listen to your favorite music online, easy to find music styles and totally free. You can listen to your favorite music with headphones or not, and you can also block your cell phone and still enjoy the radio. The application will continue to work even if your cell phone is blocked. 4U Classic Rock is an application, which contains a variety of the best radio stations for your enjoyment. 4U Classic Rock has the best music separated by musical styles such as: rock and roll, meditation, hit and pop, classical music, bachata, salsa, merengue, cumbia, rap, hip hop, reggae,jazz and blues,and much more. Listen to a variety of radios, quickly, easily and totally free.