Here, on one 6-CD set, is everything Bill Monroe recorded for the first 14 years of his career, including all 60 historic duets with his brother Charlie, all 16 of the 1940-41 performances that marked Bill's first sessions as a leader, and all the classic 1945-49 Columbia sides with Lester Flatt, Earl Scruggs and Chubby Wise, with an astonishing *50 unreleased outtakes*!