Frank Zappa considered “The Adventures of Greggery Peccary” hismasterpiece. It contains every aspect of his melodic, harmonic, and rhythmic language. These techniques include: folk-influenced songs, quartal melodies, asymmetric meters, speech-influenced rhythms, octave-displaced chromaticism, “conceptual continuity,” and creative studio techniques. He considers these aspects and weighs them against each other to maintain a sense of balance on both a micro- and macroscopic scale. The first chapter of this dissertation explores the events that led up to the creation of the composition. A chronology of historical events precedes a synopsis of the piece’s narrative. The second chapter examines a rehearsal tape from March of 1972, which was released posthumously, that contains the song that will eventually become the fourth movement of the piece: “The New Brown Clouds.” That song, as well as others on the recording, contains several examples of Zappa’s musical vocabulary. These excerpts are also included in the two albums that were released and are also heard in Zappa’s magnum opus. The third and fourth chapters examine the first version of “The Adventures of Greggery Peccary.” The third chapter focuses on musical analysis and identifying key components of Zappa’s compositional style. The fourth chapter talks about he Grand Wazoo’s tour, the Petit Wazoo tour a month later, and the subsequent tour in 1973. Zappa wrote new music for these tours, and those pieces became part of the large revision that is discussed in chapter 5. The sixth chapter examines the recording process, locations, and the innovative techniques Zappa uses in the studio. Every time he released a recording of the composition, there was always a notable revision— including shortly before his death in 1993. Finally, the Ensemble Modern’s posthumous recording of “The Adventures of Greggery Peccary” is also scrutinized.