Question: Future World" is a song and a single made by the German heavy metal band Helloween, it is performed frequently by Helloween and which power metal band from Hamburg, northern Germany, founded and fronted by Kai Hansen after his departure from the German power metal band Helloween?
Sentence (from "Future World (Helloween song)"): It is performed frequently by Helloween and Gamma Ray at their concerts, and is usually used for crowd participation, usually with the crowd singing the first verse, sometimes after the singer shouts the first phrase.
Relevant evidence: Yes