DOROTHY, like Blondie and DAUGHTRY before them, is a group, not a person. Nevertheless, it's clear that Dorothy Martin is the driving force of the Los Angeles-based quartet: she's not only the namesake, she's the singer and the star around which the other members rotate. Due to landing a contract with Jay-Z's Roc Nation, the modernized-blues-rock group -- they split the difference between the Black Keys at their most electronica and the full-throated wail of Adele -- became a hot pick to click in the mid-2010s, with their 2015 digital EP serving as a teaser for their 2016 full...