Underground Soundz is an internet radio station based in Cheltenham, England, United Kingdom, bringing you the best in Drum and Bass, Dubstep, Grime & UK ... See more Garage. Their Cheltenham based Studio offers everything you would expect from a Professional Studio setting, featuring all the equipment Professional DJ's expect, housed in an acoustically treated environment, coupled with a quality Sound Installation, to ensure you get the best sound and clarity from your mix.