Chris Cowles has been hosting a weekly radio program, more or less, since 1986 and Greasy Tracks at WRTC-FM in Hartford, Conn., since 1995. As of late, the three-hour program focuses on long-form features and often includes interviews with musicians, authors and music-industry people. Approach to music played: strictly no hits, largely soul- and blues-based, but capable of going full-on Zappa, Prog (old) and jazz.