 First a quintet, Laibach quickly became a quartet and declared that the group had four members – "Vier Personen".From mid-1980s to mid-1990s, while the core quartet included Dejan Knez, Milan Fras, Ervin Markošek and Ivan "Jani" Novak, the members frequently used the pseudonyms Dachauer, Keller, Saliger and Eber.The pseudonym "Ivo Saliger" was originally used by original singer Tomaž Hostnik (since deceased) and more recently by Ivan Novak.