in 1996, zdar and boombass then created "foxxy", their first self-released house music track, under the name cassius, and the moderate success that followed lead to them remixing tracks for acts such as air. in january 1999, they released their first single to become a mainstream hit, "cassius 1999". it was published by virgin records, and entered the uk singles chart at #7. this was soon followed by their debut album, "1999", which had two more singles released from it, "feeling for you" and "la mouche". the music videos for "cassius 1999" and "feeling for you" portrayed the character deadman, from dc comics, as a dj superhero.