Definitely radio, and I love that the music I hear had been choose by someone, not only an algorithm that knows exactly the songs that will appeal to me. May I ask you what the great radios from Athens (GR) are ?

Also, if you can listen to web radio, give a try to the french station FIP (https://www.fip.fr/) they are actually on strike so it's not as good as usually but it's definitely one of the best music radio out there. Hope you enjoy !