Rosko (Bill Mercer) worked at KGFJ and KBLA in Los Angeles before moving to New York and WOR-FM in 1966. He quit on the air when he heard programmer Bill Drake had been hired. When management heard him quit on the air, the engineer on duty was called and told not to let him back on the air, so that was it for Rosko at WOR-FM.
Two years later, he turned up at WNEW-FM, and by 1971, joined KMET in Los Angeles. Mercer also worked at WKTU in New York in 1981, and most recently was working as the voice of CBS Sports in New York.
Murray the K and Johnny Michaels also left WOR-FM, for the same reasons. Scott Muni was the only one left. Bill Drake was afraid he would have to wait until the end of Scott’s contract, so he cut a personalized ID for Scott Muni, which was never used, because Scott didn’t want to work the format either. Something was worked out between Scott & management. Scott moved on to WNEW-FM in New York, where he worked for 31 years. He moved to WAXQ-FM in 1999 for a daily one-hour show, and passed away on September 28, 2004.
William Roscoe Mercer died of cancer on August 1, 2000. This Obituary is from The New York Times.