Groof

Roberto Gemelín operates under the Groof moniker from Madrid, producing electronic music since his first release in January 2013. The Spanish artist also records under the aliases Robert Calvin, Half Mute, and Ais, maintaining an active output across multiple projects over his decade-plus career.

Groof delivers raw and hypnotic techno alongside peak time driving variants, releasing on labels including SUB TL, Trauma Collective, Warm Up Recordings, [R]3volution, and Hxagrm Records. His sound centers on deep, hypnotic techno textures that build into driving peak time arrangements, spanning both underground and dancefloor-focused territories. With seven releases catalogued through 2025, Groof maintains consistent output across these imprints, establishing his presence in both raw underground techno and higher-energy driving variants suitable for prime time DJ sets.