Solis Lacus is the cult group around renowned Belgian pianist Michel Herr, a pioneer of electric jazz in the 70's in Europe. Michel Herr rose to international prominence after winning the first prize at the jazz festival in Loosdrecht, The Netherlands, in 1971. He accompanied many European and American jazz stars on foreign tours and ran the group Jazztrack with saxophone player Wolfgang Engstfeld in Germany. At the same time, he set up his own band Solis Lacus, which consisted of Belgian musicians who had all made a name for themselves on the national jazz scene of the 1960s including Richard Rousselet and Bruno Castelluci both from Placebo. Inspired by the reigning jazz-rock sound of the day, Herr expanded his musical vocabulary and started to play electronic keyboards. Solis Lacus recorded its only album in the course of 1974 and 1975, before the members of the group headed in their own direction.