IN: The Mothers of Invention were an American rock band from California that served as the backing musicians for Frank Zappa. Formed in 1964, their work is marked by the use of sonic experimentation, innovative album art, and elaborate live shows. Originally an R&B band called the Soul Giants, the band's first lineup included Ray Collins, David Coronado, Ray Hunt, Roy Estrada and Jimmy Carl Black. Zappa was asked to take over as the guitarist following a fight between Collins and Coronado, the band's original saxophonist/leader.

Later in 1970, Zappa formed a new version of the Mothers (from then on, he mostly dropped the "of Invention"). It included British drummer Aynsley Dunbar, jazz keyboardist George Duke, Ian Underwood, Jeff Simmons (bass, rhythm guitar), and three members of the Turtles: bass player Jim Pons, and singers Mark Volman and Howard Kaylan, who, due to persistent legal and contractual problems, adopted the stage name "The Phlorescent Leech and Eddie", or "Flo & Eddie".  This version of the Mothers debuted on Zappa's next solo album Chunga's Revenge (1970), which was followed by the double-album soundtrack to the movie 200 Motels (1971), featuring the Mothers, the Royal Philharmonic Orchestra, Ringo Starr, Theodore Bikel, and Keith Moon. Co-directed by Zappa and Tony Palmer, it was filmed in a week at Pinewood Studios outside London. Tensions between Zappa and several cast and crew members arose before and during shooting. The film deals loosely with life on the road as a rock musician. It was the first feature film photographed on videotape and transferred to 35 mm film, a process which allowed for novel visual effects. It was released to mixed reviews. The score relied extensively on orchestral music, and Zappa's dissatisfaction with the classical music world intensified when a concert, scheduled at the Royal Albert Hall after filming, was canceled because a representative of the venue found some of the lyrics obscene. In 1975, he lost a lawsuit against the Royal Albert Hall for breach of contract.  After 200 Motels, the band went on tour, which resulted in two live albums, Fillmore East - June 1971 and Just Another Band From L.A.; the latter included the 20-minute track "Billy the Mountain", Zappa's satire on rock opera set in Southern California. This track was representative of the band's theatrical performances in which songs were used to build up sketches based on 200 Motels scenes as well as new situations often portraying the band members' sexual encounters on the road.
QUESTION: Dis they appear in any movies?
IN: Once is a 2007 Irish romantic musical drama film written and directed by John Carney. The film stars Glen Hansard and Marketa Irglova as two struggling musicians in Dublin, Ireland. Hansard and Irglova had previously performed music as the Swell Season, and composed and performed the film's original songs. Once spent years in development with the Irish Film Board and was made for a budget of EUR112,000.

Once was met with extremely positive reviews from critics. Upon its March 2007 release in Ireland, RTE's Caroline Hennessy gave the film 4 out of 5 stars and termed it "an unexpected treasure". About the acting, this Irish reviewer commented, "Once has wonderfully natural performances from the two leads. Although musicians first and actors second, they acquit themselves well in both areas. Irglova, a largely unknown quantity alongside the well-known and either loved or loathed Hansard, is luminous." Michael Dwyer of The Irish Times gave the film the same rating, calling it "irresistibly appealing" and noting that "Carney makes the point - without ever labouring it - that his protagonists are living in a changing city where the economic boom has passed them by. His keen eye for authentic locations is ... evident".  In May, on Ebert & Roeper, both Richard Roeper and guest critic Michael Phillips of the Chicago Tribune gave enthusiastic reviews. Phillips called it, "the most charming thing I've seen all year", "the Brief Encounter for the 21st century", his favorite music film since 1984's Stop Making Sense and said, "It may well be the best music film of our generation". Roeper referred to the film's recording studio scene as "more inspirational and uplifting than almost any number of Dreamgirls or Chicago or any of those multi-zillion dollar musical showstopping films. In its own way, it will blow you away." Once won very high marks from U.S. critics; it is rated 97% "fresh" by the film review aggregation site Rotten Tomatoes and scored a grade of 88 ("universal acclaim") according to Metacritic.  In late 2007, Amy Simmons of Time Out London wrote, "Carney's highly charged, urban mise-en-scene with its blinking street lamps, vacant shops and dishevelled bed-sits provides ample poetic backdrop for the film's lengthy tracking shots, epitomised in a sequence where the Girl walks to the corner shop in pyjamas and slippers while listening to one of the Guy's songs on her personal stereo. With outstanding performances from Hansard and new-comer Irglova, Carney has created a sublime, visual album of unassuming and self-assured eloquence." The Telegraph's Sukhdev Sandhu said, "Not since Before Sunset has a romantic film managed to be as touching, funny or as hard to forget as Once. Like Before Sunset, it never outstays its welcome, climaxing on a note of rare charm and unexpectedness."  The film appeared on many North American critics' top ten lists of the best films of 2007:  In 2008, the film placed third on Entertainment Weekly's "25 Best Romantic Movies of the Past 25 Years".
QUESTION:
Is there anything worth noting about the visuals in the film?