Sealed, Long Out Of Print Quiex SV Audiophile Pressing. The Most Talked About "True Audiophile" Blues Recordings Ever. Mastered From The Original 1964 Chess Analog Master Tapes, This Pressing Brings Out Elements Of The Intimate Studio Production As Never Before. Muddy's Supporting Cast Includes Buddy Guy On Guitar, With Occasional Visits By Chess Veteran Drummer Clifton James, Otis Spann's Piano And Willie Dixon At The Upright.