Joost Klein, also known mononymously as Joost, is a Dutch musician, rapper, singer, and former YouTuber. 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 ten 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 the songs "Wachtmuziek" (2022), "Friesenjung", and "Europapa" (2024).