For years, Jackson C. Frank was as ghostly a legend as they come. Even the relatively few record collectors who revered his work were usually only aware of the lone album that he released in his lifetime. For all most listeners knew, Frank put out a celebrated LP and vanished, despite that record having been produced by Paul Simon.

1975 Mekeel Sessions features six tracks recorded in the mid-'70s at a studio in Lake Hill, New York about five miles from Woodstock where Frank was living at the time. Only discovered in the mid-'90s, these recordings still hum with the same mysterious warmth that defined Jackson at his peak. His guitar work, alternating between strummed and fingerpicking, is consistently adept. His stark and somber voice more weathered than the lighter tone heard on his 1965 debut.

The Mekeel tapes were intended for Frank's sophomore album (titled Marlene), but alas it never came to be. What one hears is not a singer-songwriter fading out of view; it is a singular artist who never stopped trying to build his own world, even when no one was watching. For fans of everyone who Jackson influenced: from Nick Drake, Sandy Denny, Bert Jansch and John Martyn to more contemporary acts like Elliott Smith and Iron And Wine who surely used Frank's sparse approach as a template.