The first three LP album's Niemen recorded with his band "Akwarele" ("Watercolours"). Subsequently, he recorded with his other new bands: "Enigmatic", "Grupa Niemen" and "Aerolit". In 1969 he changed his musical style to progressive rock while recording the monumental album "Enigmatic". That album's most notable song was "Bema pamięci żałobny rapsod" ("A Mournful Rhapsody in Memory of Józef Bem"), based on the 19th-century poem by Cyprian Kamil Norwid. The rest of "Enigmatic"'s songs were also in sung poetry form. Niemen played the Hammond organ on his records, later moving to the mellotron and the Moog synthesizer.