CHICAGO Chicago VI (2009 Japanese 12-track promo sample remastered CD issued to radio stations and reviewers ahead of the actual release date originally released in 1973 includes two bonus recordings; with a custom stamped inner rimon the disc complete with picture sleeve lyrics & promo stickered obi-strip remains sealed from new) The SHM-CD [Super High Material CD] format features enhanced audio quality through the use of a special polycarbonate plastic. Using a process developed by JVC and Universal Music Japan discovered through the joint companies research into LCD display man