Borut Praper (a.k.a. Ray Kosmick), the founder of S.U.R. Studio, is a Slovenian composer, arranger, producer, multi-instrumentalist and lyricist. 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 dozens of 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. He has produced many works by other authors as well as recorded for them, most notably contributing drums as a session drummer. His work has been published on 40 digital releases, 15 audio CDs, and 2 video DVDs.
Borut currently lives in the Canary Islands with his wife Monika and a flurry of free-range geckoes.