“Less an album, more an aural family scrapbook, Smoky Mountain DNA attempts to catalogue five generations of the Owens-Parton clan via a hefty 37-track collection of mostly duets between Dolly and her extended family on both sides, past and present. Combining archival, overdubs and new recordings, it takes us on a lengthy journey that begins in 1964 with Parton’s fiddle-playing grandfather, the Rev”