Borut Praper (a.k.a. Ray Kosmick), the founder of S.U.R. Studio, is a Slovenian composer, arranger, producer, multi-instrumentalist and lyricist, currently based in Berlin, Germany. He has played drums in numerous bands and performed at many concerts since 1993, though currently he mostly records drums as a studio drummer. Since 1998 he has written and recorded music for numerous projects, including 28 full‑length theatre performances (ranging from contemporary dance to traditional theatre), two seasons of a TV show screened on the Slovenian national television, several short films, documentaries, and other audiovisual works and public events. Some of his tracks have been licensed for live‑action features, shorts and documentaries, as well as for a number of computer games, videos, promotional and corporate films.
Over the years Borut, a versatile musician with an eclectic taste, has collaborated with many great artists. He likes to work in personal contact with his clients and enjoys composing tailor-made music. His work in various capacities has been published on 41 digital releases, 16 audio CDs, and 2 video DVDs.