Dan Tillberg deputed in 1973 in the progg duo Änglabarn together with Sven I. Ohlsson. In 1977 he started his own recording studio in Malmö, Bellatrix and the following year a record label with the same name.
In 1979 came an LP with Rolling Stones songs, followed in 1981 by LP's "Mors och fars kärlek", which became his breakthrough. The following year there was an LP with Bob Dylan songs. In 1984, the LP came "Genom tårar", followed by "Erogena zoner" the following year, which became his perhaps greatest success.