David Crosby’s music has always had a touch of jazz to it—think back to the labyrinthine harmonies of CSNY circa Déjà Vu or the looser moments of late-‘60s Byrds (“Tribal Gathering,” “John Riley”). Continuing a late-career streak that includes 2014’s Croz and 2016’s folksy Lighthouse, Sky Trails indulges in the fascination fully, from the slick, Steely Dan-ish funk of “She’s Got to Be Somewhere” to “Before Tomorrow Falls on Love” and the gorgeous “Home Free,” which recall the organic, almost living quality of mid-‘70s Joni Mitchell—Crosby’s longtime friend.