Luka Ivanović, known professionally as Luke Black, is a Serbian singer and songwriter. Born in Čačak, he became the first Serbian artist to be signed under Universal Music Group, through which he released his debut EP, Thorns, in February 2015. He represented Serbia in the Eurovision Song Contest 2023 with the song "Samo mi se spava", placing 24th in the grand final. Described as the "Serbian pop alchemist", his music draws from a range of electropop and experimental pop music influences.

Čačak is a city and the administrative center of the Moravica District in central Serbia. It is located in the West Morava Valley. As of the 2022 census, the city within administrative borders has a population of 105,612 inhabitants.