More from the Nielsen report: Country is by far the top format with a total listening share of 15.9%. News/Talk is next at 11.1% with Hit Radio (CHR) in third at 8.6%. Rounding out the top five are Adult Contemporary at 7.2% and Classic Rock with 5.4%. The cellar dwellers in small and medium markets, according to Nielsen are Religious, Classical, 80s Adult Hits, Classic Country, and Oldies. All have less than 2% each of the total listening audience.