MK Ultra, also known as MelodiK Ultra, is a project led by Petrovitz YU, a DJ recognized for emotional melodic techno sets that blend hypnotic rhythms with atmospheric sounds.

He has been active on the scene since 2012, when he launched the ClubLife Radio Show on Radio Centar 987 in Kragujevac. The show was dedicated to the club scene in Serbia and the region and over the years featured exclusive DJ mixes from well-known European artists such as Audiojack, Nina Kraviz, Adriatique, and Nhan Solo.

During his career, he has performed in numerous cities across Serbia and the region. Notable appearances include several years of performances on the Urban Bug Stage at Exit Festival, opening the Energy Stage at Lovefest, as well as performances in Sarajevo clubs such as Silver & Smoke and Trezor, and at the JEMF Festival in Romania.

In 2020, he reached the semifinals of the Let’s Mix It DJ competition, placing third according to audience votes. His sets are recognizable for their carefully crafted atmosphere, where he connects emotion, rhythm, and the energy of the audience through music.