Holger Czukay and Irmin Schmidt were both pupils of Karlheinz Stockhausen, and Can inherited a strong grounding in his musical theory; the latter was trained as a classical pianist, while Michael Karoli was a pupil of Holger Czukay and brought the influence of gypsy music through his esoteric studies. Drummer Jaki Liebezeit had strong jazz leanings. The band's sound was originally intended to be based on the sound of ethnic music, so when the band decided to pick up the garage rock sound, original member David Johnson left. This world music trend was later exemplified on albums such as "Ege Bamyasi" (the name meaning "Aegean okra" in Turkish), "Future Days" and "Saw Delight", and by incorporating new band members with different nationalities. A series of tracks on Can albums, known as "Ethnological Forgery Series", abbreviated to "E.F.S", demonstrated the band's ability to successfully recreate ethnic-sounding music. They constructed their music largely through collective spontaneous composition, sampling themselves in the studio and editing down the results; bassist and chief engineer Czukay referred to Can's live and studio performances as "instant compositions".