This 6-CD box set explores Frank Zappa’s 1969 primarily instrumental solo album Hot Rats from every angle. The first three and a half discs present the basic track recording sessions recorded at T.T.G. Studios in Hollywood, California on July 18, 28, 29 and 30, 1969. Disc Four also boasts remakes, alternate takes, complete versions, and isolated tracks. Following the session material, the box’s fifth and sixth discs have the original Hot Rats album plus Zappa’s 1987 compact disc digital remix, adding numerous extras such as audio advertisements, mono single mixes, and more than a dozen vintage alternate mixes. The original mix of the album, as mastered in 2008 by Bernie Grundman, will also be available on standalone vinyl.