Ku qor sii wadida cutubkan - Šlitr wuxuu rabay inuu ku ciyaaro oo uu ku qoro qaab casri ah "rock" qaab ahaan Semafor laakiin Havlík wuu diiday. Sanadkii 1966 Šlitr wuxuu eryay "Ferdinand Havlík Orchestra", laakiin ugu dambeyntii wuxuu yareeyay ku lug lahaanshihiisa Semafor iyo Suchý. Labaduba waxay kala tageen shirkad muddo gaaban, Šlitr wuxuu soo bandhigay riwaayad cusub oo la yiraahdo "Ďábel z Vinohrad" (Ibliiska Vinohrady). Dhanka kale wuxuu sawirradiisa ku soo bandhigay Wiesbaden, Dortmund, iyo New York City. Sanadkii 1967-kii wuxuu ka qeyb galay Expo 67 ee Montreal, halkaas oo uu ku soo bandhigay bandhigga "Stars of Prague", intii uu joogay Mareykanka wuxuu sawirro ku soo bandhigay Hollywood iyo Houston. Sanadkii 1968 wuxuu dib ula midoobay Suchý ka dib dhacdooyinkii Prague Spring wuxuu dib u bilaabay shaqadiisii hore "The Devil from Vinohrady" oo jawaab cad u ah duulaankii Soviet ee Czechoslovakia
Waxaad Šlitr iyo Suchý waxay sidoo kale saxiixeen ololaha ka soo horjeedka shuuciyada 2000 Words oo uu qoray Ludvík Vaculík. Sanadkii 1968, Šlitr wuxuu ka soo muuqday filimkiisii ugu dambeeyay, "Zločin v šantánu" (Dambiga Naadiga Habeenkii).