The recordings included in this box set made Louis Armstrong the most important and influential jazz musician of the 20th century. They are still regarded as milestones of recorded jazz more than 75 years after being recorded. Disc 1: 'The Sideman' ... Full Description(26 tracks, 1923-1927) Disc 2: 'The Hot Fives Vol 1' (25 tracks 1925-1926) Disc 3: 'The Hot Fives & Hot Sevens Vol 2' (24 tracks 1927-1928) Disc 4: 'West End Blues' (28 tracks 1928-1929).