Complex sentence: The 2006 Repertoire CD was remastered by Eroc (Joachim Ehrig), who was the leader of the 1970s German rock band Grobschnitt.
Split into simpler sentences: The 2006 Repertoire CD was remastered by Eroc (Joachim Ehrig). Eroc led the 1970s German rock band Grobschnitt.