A polje (pronounced [pǒːʎe]) (or karst polje) is a large flat plain in karst territory, with areas usually 5 to 400 km². The name derives from the Slavic languages and is a cognate with the English word field.

A polje, in geological terminology, is a large, flat-floored depression within karst limestone, whose long axis develops in parallel with major structural trends and can become several miles (tens of kilometers) long. Superficial deposits tend to accumulate along the floor. Drainage may be either by surface watercourses (as an open polje) or by swallow holes (as a closed polje) or ponors. Usually, the ponors cannot transmit entire flood flows, so many poljes become wet-season lakes. The structure of some poljes is related to the geological structure, but others are purely the result of lateral dissolution and planation. The development of poljes is fostered by any blockage in the karst drainage.

A polje or karst polje covers the flatbottomed lands of closed basins which may extend over large areas, up to 1,000 km². The flat floor of a polje may consist of bare limestone, of a nonsoluble formation (as with rolling topography), or of soil. A polje typically shows complex hydrogeological characteristics such as exsurgences, estavelles, swallow holes, and lost rivers. In colloquial use, the term "polje" designates flat-bottomed lands which are overgrown or are under cultivation. The Dinaric Karst has many poljes.

Olgica "Olja" Karleuša (Serbian: Оља Карлеуша) (born October 15, 1980 in Belgrade) is a contemporary Serbian pop-folk singer. She is not related to Jelena Karleuša as is often assumed.

She participated in the Serbian VIP big brother final 2007.

In January 2009, she gave birth to a baby boy.

Ivan Rebroff (31 July 1931 – 27 February 2008) was a German singer, allegedly of Russian ancestry, with an extraordinary vocal range of four and a half octaves, ranging from the soprano to bass registers.

Rebroff was born in Berlin as Hans-Rolf Rippert. He was famous for singing Russian folk songs, but also performed opera, light classics and folk songs from many other countries. He was known on stage for his gusto. He performed over 6,000 concerts in his career, including a two-year seven-day-a-week stint at the French opera, singing, among other greats, Fiddler on the Roof. Rebroff still performed 12 shows in 14 days when he was well into his seventies, such as on an Australian tour.

Ivan Rebroff described himself as international, the "connection between East and West". He became a citizen of Greece and lived on the Greek island of Skopelos in the Sporades.

He died in Frankfurt after a long illness. Four days after his death, his brother Horst Rippert, who is nine years his senior (and by his own accounts shot down Antoine de Saint Exupéry), claimed part of Ivan's vast fortune.

Helmut Lotti (born Helmut Barthold Johannes Alma Lotigiers on 22 October 1969), is a Flemish Belgian tenor and singer-songwriter. Lotti performs in several styles and languages: Once an Elvis impersonator, he has sung African and Latino hit records, and he crossed over into classical music in the 1990s.

The son of Luc Lotigiers and Rita Lagrou, Lotti was born Helmut Lotigiers in Ghent, Belgium, and began his singing career with a visual and singing style in an obvious imitation of Elvis Presley, and was described as "De Nieuwe Elvis" (in Dutch) or "The New Elvis". His first two albums were Vlaamse Nachten ("Flemish Nights", 1990) and Alles Wat Ik Voel ("All That I Feel", 1992). After a few more albums, he changed direction in 1995 with the first of what became a long series of "Helmut Lotti Goes Classic" albums, which proved to increase his popularity. Since 2000 he has also made successful recordings in traditional Latino, African and Russian-style music.

Helmut Lotti sings fluently in his mother language Dutch, as well as Afrikaans, English, French, German, Russian, Ukrainian, Hebrew, Italian, Latin, and Spanish. He has sold over 13 million albums worldwide and received over 90 platinum and 70 gold albums.

Jurica Pađen is a well-travelled Croatian singer and guitarist. He was a founding member of the bands Parni valjak and Aerodrom and member of Azra and Grupa 220. During the 1990s he started his own group Pađen Band. In the 2000s he was also a part of the 4 asa supergroup along with Rajko Dujmić, Vlado Kalember and Alen Islamović.

Pađen also participated in the wartime Hrvatski Band Aid, and also appeared on the compilation Rock za Hrvatsku with his war song Tko to tamo gine (Who's dying over there).