Having reached #2 on the Czechoslovakian hit parade with the Kubišova duet "Oh Baby Baby", Vondráčková reached #1 in September 1967 with "Nedoufej" a rendering of the Sonny & Cher hit "Little Man": this was one of a number of Czech language cover versions Vondráčková cut for the Supraphon label, others being ""Pátá"" ("Downtown"), "Chytila Jsem Motýlka" ("I Only Want to Be with You") and "Růže kvetou dál", a rendering of the Gilbert Becaud hit "L'Important c'est la Rose" which afforded Vondráčková a second #1 in November 1967 and remaining in the Top Ten until March 1968.

In January 1968 Vondráčková performed as a group with Neckář and Kubišová at a Czech music showcase presented at the MIDEM trade fair in Cannes with a resultant month-long gig for the trio at the Olympia Theatre in Paris.

On 1 November 1968 Vondráčková, Neckář and Kubišová officially consolidated as an act known as the 'Golden Kids', the group recording two albums and making extensive live and televised appearances in Czechoslovakia and Germany before being forced to disband in February 1970 as Kubišová was banned from performing due to her outspoken opposition to the Communist regime in Czechoslovakia.

As the eighties gave way to the nineties, and all of Europe was in the throes of change, she reached the milestone of selling a million albums, performed in the Czech concert Helena 90, and took on the role of Fantine in Les Misérables.

In the aftermath of the Velvet Revolution of 1989, Vondráčková and other veteran Czech pop stars underwent a career decline due to being closely associated with Czechoslovakia's period of Communist rule.

After several years the Czech public was able to view Vondráčková and her contemporaries objectively and with appreciation: from 1997 Vondráčková was frequently showcased on TV Nova and in 2000 she returned to the mainstream recording scene with Vodopád a fifteen track album of Czech original dance tracks which, spearheaded by the single "Dlouhá noc", reached Platinum status selling 35,000 copies.

Over the course of the first decade of the new century, Vondráčková continued to release records to commercial acclaim – she is the best selling ever singer in the Czech Republic (and Czechoslovakia before it)[citation needed] – as well as performing in a number of well-received concerts.

On 18 October 2005 Vondráčková headlined a gala in Prague celebrating forty years of performing: the event was filmed for broadcast by TV Nova that 26 December.

Although the Eurosong 2007 final was not broadcast by ČT until 10 March 2007 the competing songs were made available for listening from the time of their announcement with voting - done by SMS - open from 23 February 2007: around the last-named date ČT announced the disqualification of "Samba" citing the track had been recorded too far in advance to be considered as a possible entrant for Eurovision 2007.

lead as her "life role" but left the production in June 2006 claiming Nova Scena had overtaxed Vondráčková's earnings in the amount of 83,465 Kč.

Her first husband was East German musician Helmut Sickel whom she met at the Sopot International Song Festival in 1977 (he was then the bass player for Kreis); married 28 April 1983, the couple divorced in November 2001.