One of the longest running of East German prog rock bands, they changed completely throughout their history. Established in 1969, and although quite popular, they were considered too radical to get an album released, instead they spent much of their time as backing band to various pop singers. Their debut album (issued in 1974) amounted to an early history of the band, followed by 3 other albums that are considered to be their definitive progressive rock era. In the 1980s they adopted a more mainstream pop rock style and became very popular in the DDR (GDR).
