Born 1 November 1942 in České Budějovice, Kubišová's father was a cardiologist, her mother was a housewife, who later sold records in Celetná street in Prague. In 1952 the family moved to Poděbrady. Wanting to get to college after graduating from high school, she started to work in Poděbrady glassworks. Her singing career began with a dance group which performed in Nymburk at the afternoon teas. In 1961, she reached the finals in "Hledáme nové talenty" ("The Search for Talent"). In 1962, she lost her job in the glass factory, and auditioned for the Stop Theatre in Pardubice. In 1963, she moved to Theatre Alpha in Plzeň to perform in "Black Dream", a production by Ludvík Aškenazy. She began collaborating with Václav Neckář and Helena Vondráčková in December 1965, when preparing for performances of "Waiting for Fame". In 1967 she won "Zlatý slavík". A song, "Prayer for Marta", with lyrics by Petr Rada, became a symbol of national resistance against the occupation of Warsaw Pact troops in 1968. On 1 November of that year, she joined with Neckář and Vondráčková to create the popular group, 'Golden Kids'. In 1969 she won her second Zlatý slavík award and married film director Jan Němec. A year later, she won the Zlatý slavík a third time, but she had to receive the award in secrecy of the office of the "Mladý svět" magazine due to the commencing normalization. The last performance of the Golden Kids took place on 27 January 1970 in Ostrava.