Song "Če-ki" is a musical composition created by Czech composer Pavel Kostiuk. The song gained popularity in the 1960s and became a well-known symbol of Czechoslovak pop music of that time. It was first performed by the vocal group FDMP (Ferdy Mravec a drak Pepíček) in 1966. The lyrics were written by Ivo Fischer, and the song was arranged by composer Karel Svoboda. "Če-ki" is a playful and catchy tune that combines elements of pop, rock, and jazz. The song's cheerful melody and amusing lyrics made it an instant hit among the Czech audience. Its success led to multiple cover versions, including instrumental arrangements and foreign language adaptations. The popularity of "Če-ki" continued over the years and it remains a beloved Czech song, often performed at various events and celebrations.