Two days before she surprise-released her new album, Ashley Monroe posted an open letter to the city she has called home for most of her life. In it, she recounts notable moments in her impressive career: moving to Nashville after her father died, signing record deals, getting dropped by labels, releasing six solo albums and four with the Pistol Annies , co-writing two No. 1 country hits, and earning three Grammy nominations. This long list of accomplishments doesn’t even mention her work with the Raconteurs , her co-writes with Guy fuckin’ Clark , or that one of her records (2013’s Like a Rose ) is a stone-cold classic of 2010s insurgent country.…