The Rangers or Plavci is a Czech pop folk and country music band formed in 1964 by Milan Dufek and Antonín Hájek.
Its classic ensemble consisted of Milan Dufek (1944–2005; tenor), Antonín Hájek (1944–1989; baritone), Miroslav Řihošek, Jan Vančura (countertenor), Jiří Veisser, and Radek Tomášek.
The Rangers quickly became famous for the singing qualities of its members, from the bass of Jiří Veisser to the countertenor of Jan Vančura.
The Rangers' hits were cover versions of "The Water Is Wide" (1724, Rákosí), "Cotton Fields" (1941, Pole s bavlnou) sung as Gospel music, "King of the Road" (1965, Král silnic), "Come the Day" (1966, Ave Dies), and "Nose For Trouble", (1966, Nos pro trable).
The official reason was that a Czech band name could not be the same as that of "American killers in Vietnam" (the United States Army Rangers).