Around 1970, Zappa put together a new version of The Mothers that included British drummer
Aynsley Dunbar, jazz keyboardist
George Duke, previous Mothers member Ian Underwood,
Jeff Simmons (bass, rhythm guitar), and no fewer than
three members of
The Turtles: bass player
Jim Pons, who before joining
The Turtles had been the lead singer of
The Leaves (of "Hey Joe" fame); and singers
Mark Volman and
Howard Kaylan, who due to persisting legal/contractual problems adopted the stage-monikers "The Phlorescent Leech and Eddie," or "
Flo & Eddie" for short.
The new lineup debuted on Zappa's next solo LP
Chunga's Revenge, which was followed by the soundtrack to the movie project
200 Motels, featuring both The Mothers and The
Royal Philharmonic Orchestra. At the time George Duke was in the band and appears both in the film and on the soundtrack as a musician. He left the band to play with
Cannonball Adderley and was replaced by
Don Preston from the original Mothers, who acted in the film, but is not playing on the soundtrack.
This double album was followed by two live sets,
Fillmore East - June 1971 and
Just Another Band From L.A., which included the 20-minute track "Billy The Mountain," Zappa's satire on rock opera, set in Southern California. The low-concept cover art of the Fillmore album — satirizing the
bootleg albums that had recently become popular, and of which Zappa was a favoured target — appeared just at the apex of the era of great rock "album cover artwork".
In December 1971 there were two serious setbacks. While performing in
Montreux,
Switzerland, the Mothers' equipment was destroyed when a flare set off by an audience member started a fire that burned down the casino where they were playing —an event immortalized in
Deep Purple's song "
Smoke on the Water." The event and immediate aftermath can be heard on the bootleg album
Swiss Cheese/Fire, released legally as part of Zappa's
Beat the Boots II compilation. Later that month, Zappa was attacked at the Rainbow Theatre,
London. An audience member pushed Frank off the stage and into the orchestra pit. The man, Trevor Howell, gave two stories to the press: one was that he felt the band hadn't given him value for his money; the other was that Zappa had supposedly been making eyes at Howell's girlfriend. Zappa suffered serious fractures, head trauma and injuries to his back, leg, and neck, as well as a crushed
larynx (which caused his voice to drop a
third after healing). This left him wheelchair bound for a time, forcing him off the road for over half a year. Upon his return to the stage in September 1972, he was still wearing a leg brace for a period thereafter, had a noticeable limp and couldn't stand for very long while on stage. He said one leg healed "shorter than the other" (a reference found in the lyrics of "Zomby Woof" and "Dancin' Fool"). Meanwhile, the Mothers were left in limbo, and eventually formed the core of
Flo and Eddie's band as they set out on their own.
In 1971-72 Zappa released two strongly jazz-oriented solo LPs,
Waka/Jawaka and
The Grand Wazoo, which were recorded during the forced layoff from concert touring, using floating lineups of session players and Mothers alumni. Extracts from both these LPs, as well as from the earlier
Hot Rats and the later
Sleep Dirt regularly appear as background music in TV-documentaries on various topics, the most popular track appearing to be the title-track of
Waka/Jawaka.
Zappa began touring again in late 1972, first with a scaled-down version of the big band appearing on
The Grand Wazoo - appropriately known as "Petit Wazoo." He then formed groups that variously included
Ian Underwood (reeds, keyboards),
Ruth Underwood (vibes, marimba), Sal Marquez (trumpet, vocals),
Napoleon Murphy Brock (sax, flute and vocals),
Bruce Fowler (trombone),
Tom Fowler (bass),
Chester Thompson (drums), Ralph Humphrey (drums), George Duke (keyboards, vocals) and
Jean-Luc Ponty (violin).
Zappa and Cohen merged the Bizarre and Straight labels in 1973 and renamed the company
DiscReet Records, also distributed by Warner Bros. He continued a high rate of production through the early 1970s, including the albums
One Size Fits All and
Apostrophe,
Over-Nite Sensation and
Roxy & Elsewhere featuring ever-changing versions of a band though still called the Mothers. These albums were notable for the highly technical
jazz-fusion the bands were renowned for, demonstrated on such pieces as "
Inca Roads," "Echidna's Arf (Of You)" or "Be-Bop Tango (Of the Old Jazzmen's Church)."
In the mid 1970s Zappa prepared material for
Läther (pronounced "leather"), an intended four-LP project.
Läther encapsulated all the aspects of Zappa's musical styles —rock tunes, orchestral works, complex instrumentals, and Zappa's own trademark
tube distortion-drenched guitar solos. Wary of a quadruple-LP,
Warner Bros. Records refused to release it. Zappa soon appeared on the (at the time) influential Los Angeles radio station
KROQ, allowing them to broadcast the
Läther album and encouraging listeners to make their own tape recordings. A lawsuit between Zappa and Warner Bros. followed, during which the major parts of the album were issued as
Zappa in New York (1978),
Studio Tan (1978),
Sleep Dirt (1979), and
Orchestral Favorites (1979), with limited
promotion.
Läther was released posthumously in 1996.
Zappa's relationship with long-time manager Herb Cohen ended in 1976. The breakup was an acrimonious affair, exacerbated by Zappa's ongoing feud with Warner Bros. Zappa however discovered that Cohen had been skimming more than he was allocated from the label, and he also alleged that Cohen had used some of Frank's money to fund recordings for other artists. Cohen filed a lawsuit against Zappa in return, due to Zappa taking the master copies of
Zoot Allures (1976) directly to Warner Bros., thus bypassing DiscReet completely. While it is unknown what became of the lawsuits, Zappa and Cohen would never work together again. Zappa eventually gained the rights of all his material created under the Warner Bros. contract.
During the late 1970s Zappa made two appearances on the popular
NBC television show
Saturday Night Live. His appearance in December 1976 as a featured musical guest, included an impromptu musical collaboration with cast member
John Belushi during the instrumental piece "The Purple Lagoon". Belushi appeared as his Samurai Futaba character playing the tenor sax with Zappa conducting. Also, "I'm The Slime", featuring a voice-over by SNL booth announcer
Don Pardo, was performed. In 1978 Zappa served both as host and musical act, and as an actor in various sketches.</bgref>
Zappa's 1970s period ended with the releases of
Sheik Yerbouti (1979), the first release on
Zappa Records, which contained Zappa classics such as "Dancin' Fool", "
Bobby Brown", and "Jewish Princess," which received some controversial attention, as well as the triple LP
Joe's Garage (1979), which features lead singer
Ike Willis as voice of "Joe".
Joe's Garage features a coherent story line about the suppression of freedom of speech (and music), and mixes catchy songs like "Catholic Girls," "Lucille Has Messed My Mind Up," and the title track, with long guitar solos taken from live concerts and mixed with studio material (cf. the aforementioned process
xenochrony). Finally, the album contains what would become one of Zappa's most famous guitar "signature pieces," "Watermelon in Easter Hay."
Joe's Garage went on to be named one of the top-25 drumming performances of all time in a 1993
Modern Drummer magazine article.
Sheik Yerbouti was a commercial success partly due to "Bobby Brown (Goes Down)." Due to the explicit lyrics about a young man's encounter with a "dyke by the name of Freddie," the song did not get airplay in the US, but it topped the charts in several European countries and is still popular in countries where English is not the primary language.
In 1992 Zappa told
Matt Groening that "I don't think anything has outsold Sheik Yerbouti, partly because ‘Bobby Brown’ keeps becoming a hit every ten years . . . I think it was back on the charts again in Norway. For no apparent reason, it was back."