The Beatles "Get Back"/"Let It Be" sessions and the resulting unreleased and released albums and bootlegged recordings are among the most interesting and confusing aspects of the Beatles recorded legacy. Bruce Spizer's fourth installment in his Beatles album series, "The Beatles Finally Let It Be," covers the January 1969 rehearsals and recording sessions, the unreleased "Get Back" albums, "Let It Be" and "Let It Be...Naked," along with American,...