The Official app for GReeeeN! Everything you want to know about GReeeeN is available on your hands. Features included in this app. ▼ News. Receive all the latest news updates. ▼ Alarm. Go to sleep and get up with alarm. ▼ Let's Talk. Chat with the artist and other fans of them directly. ▼ M Map. Check the place to go and spots the artist are recommended. ▼ Cloud player.