Slobodan Trkulja is a Serbian multi-instrumentalist, composer and singer in traditional and Byzantium style. Trkulja is one of the first artists who composed, performed, and popularized Balkan Traditional Music with a modern approach in arrangements. He is the founder of the Modern Balkan Tradition music genre, although he is most famous for his collaboration with Metropole Orchestra from Netherlands in 2008. Aside from playing 13 instruments, Dutch daily NRC Handelsblad called him "one of the most beautiful male voices of the Balkan." He had no formal music training until 1997, but attended a public high school in Sremski Karlovci. Slobodan moved to Netherlands in 1997, and returned to Serbia in 2008, where he has been since.