Ronnie Dunn has apparently parted company with Sony Music’s Arista label after being associated with the imprint for more than two decades. He announced his exit on Facebook last week, although the posting was later deleted. A source at Sony Music Nashville declined comment Monday (June 11) when contacted by CMT.com. Dunn’s career rocketed in 1991 when Brooks & Dunn’s debut single for Arista, “Brand New Man,” topped Billboard’s country songs chart for two weeks. Their next three singles — “My Next Broken Heart,” “Neon Moon” and “Boot Scootin’ Boogie” — also spent multiple weeks at No. 1. Their reign as country’s top duo continued with numerous No. 1 singles until Dunn and partner Kix Brooks performed their last concert together in 2010. Arista released Dunn’s self-titled solo debut album in June 2011. The first single, “Bleed Red,” reached No. 10 on Billboard’s country chart in 2011. It was followed later that year by “Cost of Livin’,” which peaked at No. 19. His most recent single, “Let the Cowboy Rock,” peaked at No. 31. His solo album has sold more than 200,000 copies. Brooks, who has been working on his own album, recently released “New to This Town,” a collaboration with Joe Walsh, as his first solo single for Arista.