“ Koschitzky-mastering is a mixing and mastering studio located in Asturias owned by Carlos Koschitzky with 20 years of experience as a sound engineer, in which he has worked with national and world-renowned artists such as Oscar MuleroCristian Verela, De La SwingCarlos JeanNataliaClericBrainwaltzeraWhyt NoyzTensalExiumHector CoutoPaco Osuna,ReekoSvrecaPaul RitchMastodonteChristian WunschDold, also working with the labels PoleGroupSemanticaAnalogical ForceWarmUp RecordingsELROW MusicOaksTsunami RecordsWreck<, and many more.