MODEST PETROVICH MUSSORGSKY Boris Godunov - Quad (1977 UK HMV Angel Series Quadraphonic 4-LP box set, fully compatible with conventional stereo systems. Contains highlights from the world premiere of Mussorgsky's original score for what is considered his masterpiece. The Polish Radio Chorus of Krakow and the Boys' Chorus from the Krakow Philharmonic are conducted by Jerzy Semkow. The box shows light edgewear and the vinyl appears barely played SLS1000)