She started singing at the age of 15, first with a rock band, and later with an American band on the Spanish island of Lanzarote (Canary Islands). Her career started changing after her win at the 2000 Do-Re-Mi amateur singer contest TV show, where she performed "Against All Odds" by Phil Collins. It was her first TV performance.[2] In 2001, she, together with Tereza Kerndlová and Tereza Černochová, established a girl groupBlack Milk [cs]. In 2002 they released their first studio album Modrej dým. The same year they earned the Czech Nightingale prize in the "Discovery of the Year" category.[3]
In 2005 the band dissolved. Half a year later the same year Zeťová released her first solo album, Ready to Roll, and was named "Surprise of the Year" in the Czech Nightingale poll.[3]