Bob Dylan's influence on popular music is incalculable. As a songwriter, he pioneered several different schools, from confessional to hallucinatory, stream-of-consciousness narratives. As a vocalist, he redefined the lead singer's role in popular music. As a musician, he sparked many genres of pop music, including electrified folk-rock and country-rock. Many of his songs have become popular standards, covered by many artists, and his best albums are undisputed classics. Bob Dylan: Album File and Complete Discography includes descriptions of Dylan's 43 officially released albums and collaborative efforts, including year of release, label, credits, track list, timings and comments on each track. This is a must for every devoted Dylan fan.