The Ozark Mountain Daredevils mark their 51st year by bringing their past, present and future together into “Jackie Blue 2,” a newly-recorded version of their iconic song. Available now on all major streaming platforms, “Jackie Blue 2” updates the 1975 hit with the vocals of Molly Healey, who has been performing the fiddle, cello and backing vocals with the Daredevils since 2012.