An alumnus of Boston's New England Conservatory, trombonist Curtis Hasselbring -- also known as Curha -- is among a number of creative jazz musicians who moved to New York (Brooklyn, specifically) and enlivened the city's so-called "downtown scene" during the '90s, continuing his outré explorations into the 21st century as both a bandleader and valued sideman. Hasselbring's first recorded appearances began when he was still in Boston in the late '80s, however, as a member of Ken Schaphorst's big band, Russ Gershon's freewheeling Either/Orchestra, and the Charlie Kohlhase Quint...