On August 17, 2012, Mark Thompson and Brian Phelps appeared on KLOS for the final time, effectively ending "The Mark & Brian Show" after 25 years (including two years on previous station WAPI in Birmingham, Alabama). Three days later, on August 20, Cumulus announced that Heidi Hamilton and Frank Kramer, former hosts on KLSX and KABC, would host morning drive beginning September 4 as "The Heidi & Frank Show". On August 15, 2016, Cumulus announced that Frosty Stillwell, with whom Hamilton and Kramer have co-hosted at the same two stations, would join the duo weekday mornings effective September 6.