 Some stations, including WAZR, KCRZ, and WXXX, air a 5am "pre-show" (two pre-recorded segments and a phone tap) before the actual show.A "best of the week" compilation show is also carried on Saturday mornings by most stations.While it was not created at WHTZ, the popular "Morning Zoo" format became a widely employed morning show concept based on its success at Z100 - even to the point of being implemented at WHTZ's sister station in Cleveland, rock-formatted WMMS.