Radio Gamma Ray you can listen on this page of our site. Station work in genres: Discography. Gamma Ray - the German metal band formed in 1989, Kai Hansen, former guitarist and vocalist of the band Helloween.. Radio Gamma Ray has a rating 5.0. Broadcasting country: Germany. The station was rated by 1 listeners. Radio Gamma Ray you can also listen in the FMCUBE app for Android.