After first attempts with his self-founded band Midia, he joined Sodom in 1987, who were originating from Gelsenkirchen, and with whom he had previously shared the rehearsal room.

[1] Taking his lead from the pseudonyms of his new bandmates at Sodom, Tom Angelripper and Chris Witchhunter, Gosdzik called himself "Frank Blackfire".

[2] In July 1989, Blackfire left Sodom due to personal differences[1] and joined Essen's Kreator, another pioneer band of the German thrash scene.

Three commercially successful studio albums under Blackfire's participation followed, Coma of Souls (1990), Renewal (1992), and the 1995 released Cause for Conflict, which again reached the German charts.

[4] At the end of 2000, Blackfire moved to São Paulo, Brazil, where he earned his living as a guitar teacher and, in the fall of 2001, re-founded his own band, Mystic, in which he also plays as a singer and musically ties on to his thrash roots from the 1980s.