Joost Klein, also known mononymously as Joost, is a Dutch musician, rapper, singer and former TH-camr. Mainly a hip hop artist, his songs and performances often include influences of electronic music, such as drum and bass, hardstyle and gabber. He has released eight studio albums, two of which reached the top ten of the Dutch Album Top 100. He has amassed four chart entries on the Dutch Top 40, and is best known for "Luchtballon", "Wachtmuziek", "Friesenjung" and "Europapa".
"Europapa" was selected to represent the Netherlands in the Eurovision Song Contest 2024 and subsequently became Klein's first song to top both the Dutch Top 40 and Single Top 100. Having qualified from the semi-final, he was scheduled to perform fifth in the final, but was disqualified from the competition amidst allegations of misconduct.