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 uncovered decades later, these recordings hum with the same mysterious warmth that defined Jackson at his peak. His guitar work, alternating between strummed and fingerpicking, is perfectly understated. His stark and somber voice, more weathered than the lighter tone on his debut.