Olympic were the most important group during the 60s in what used to be Czechoslovakia, a country that spawned many great groups like The Matadors or the Slovakian Prudy to name just a couple. The Matadors are probably better known amongst foreigners since most of their stuff was recorded in English.
That was not the case with Olympic since, even though they started playing rock'n'roll covers, when they begun writing their own material they were the first to do it in their native tongue.They released several singles, EPs and recorded the first album in Czech Rock's history in 1968 "Zelva" (The Tortoise). That year the band was touring France were an EP was issued with 3 songs in English, "Midsummer night" being one of my favourites showing the band going crazy, totally freaking-out, a must hear!
