Let It Go Hard Rock 1981.07 45 RPM Single Studio PolyGram Records inc. 76120 Robert John "Mutt" Lange The leadoff single from "High N' Dry". There was a consumer version and a DJ version. This is the consumer version. Let It Go Hard Rock 1981.07 45 RPM Single Studio PolyGram Records inc. 76120 DJ Robert John "Mutt" Lange The leadoff single from "High N' Dry". There was a consumer version and a DJ version. This is the DJ version.