Gunnar Graps (born November 27, 1951, Tartu, Estonian SSR – died May 17, 2004, Tallinn, Estonia) was an Estonian musician and one of the pioneers of hard rock in Estonia and Soviet Union. He is referred to as "Raudmees" (Iron Man).
https://en.wikipedia.org/wiki/Gunnar_Graps
https://et.wikipedia.org/wiki/Gunnar_Graps