1980s
During the 1980s, Zagorová regularly filmed her musical TV show, Dluhy Hany Zagorové. She performed at many concerts at home and abroad, sometimes up to 360 in a year. She was well known in Poland, Germany, and the USSR. She also collaborated with a number of foreign artists, including Polish singer Irena Jarocka.
In 1980, she appeared as one of the leads in the musical film The Hit by director Zdeněk Podskalský.
From 1980 to 1986, she performed with the dance and singing duo of Petr Kotvald and Stanislav Hložek, and in 1986, she began collaborating with musician and composer Karel Vágner. During this period, Zagorová recorded seven studio albums, with the input of numerous established as well as up-and-coming composers, including Petr Hapka.
In June 1989, Zagorová signed the "Několik vět" petition, in which Charter 77 demanded the release of political prisoners and freedom of speech. Her activities were blocked by the government and she was not allowed to speak in public until the fall of the Communist regime. She resisted pressure to repeal her signature, instead standing her ground with the words "There was nothing [in the petition] with which a decent person would disagree". She sang in public for the first time since the fall of the Communist regime in November 1989, together with Jaroslav Hutka, at Wenceslas Square in Prague.