Question: Which American musician, composer, activist and filmmaker whose work is characterized by nonconformity, free-form improvisation, sound experiments and satire of American culture, has collaborated with American keyboard player Tommy Mars?

full_context: Document 1: Frank Zappa: Frank Vincent Zappa (December 21, 1940 – December 4, 1993) was an American musician, composer, activist and filmmaker. His work was characterized by nonconformity, free-form improvisation, sound experiments, musical virtuosity, and satire of American culture. In a career spanning more than 30 years, Zappa composed rock, pop, jazz, jazz fusion, orchestral and "musique concrète" works, and produced almost all of the 60-plus albums that he released with his band the Mothers of Invention and as a solo artist. Zappa also directed feature-length films and music videos, and designed album covers. Publications such as "Ultimate Classic Rock" and "The Independent" have described him as one of the most innovative and stylistically diverse rock musicians of his generation.
Document 2: David Lynch: David Keith Lynch (born January 20, 1946) is an American director, screenwriter, producer, painter, musician, actor, and photographer. He has been described by "The Guardian" as "the most important director of this era". AllMovie called him "the Renaissance man of modern American filmmaking", while the success of his films has led to him being labelled "the first popular Surrealist".
Document 3: Marc Mann: Marc Mann is an American keyboardist, guitarist, programmer, arranger and conductor. He is known for his work with Oingo Boingo, Jeff Lynne and Electric Light Orchestra. In 2002 he performed in the "Concert for George" alongside Eric Clapton, Jeff Lynne, Ringo Starr and Paul McCartney, playing George Harrison's parts. He is credited as performer, arranger or producer on 54 albums. Mann is a long time collaborator with Danny Elfman in such films as the "Men in Black" series, "Mars Attacks!", "Sleepy Hollow", plus many more. He is usually credited for MIDI supervision and some orchestrations.
Document 4: Tom Ranier: Thomas John "Tom" Ranier (born July 13, 1949) is an American instrumentalist who primarily plays piano but also saxophone and clarinet (multireedist). As a jazz artist he has recorded widely under his own name and as a sideman for Warner Bros., Concord Records and several other labels. He has been prominent in the film, television, and music recording industry since the 1970s. He has played keyboards, woodwinds and writing music for a long list of assignments, including Grammy, Academy Award, Emmy, and Golden Globe winning media and soundtracks for artists such as , Shirley Bassey, Michael Feinstein, Christina Aguilera, Joe Pass, Plácido Domingo, Barry Manilow, Natalie Cole, and many others. As a pianist and jazz artist, "(his) personal approach mixes aspects of Bud Powell's complexity, Oscar Peterson's ardent swing and Bill Evans' exploratory harmonies."
Document 5: Tommy Thayer: Thomas Cunningham Thayer (born November 7, 1960) is an American musician and songwriter, best known as the lead guitarist The Spaceman, for the American hard rock band Kiss, as well as the former lead guitarist for the band Black 'n Blue.
Document 6: Dancin' Fool: "Dancin' Fool" is a song by Frank Zappa from his 1979 album "Sheik Yerbouti". It was the first of two singles released from the album, followed by the second single "Bobby Brown (Goes Down)." The song premiered on stage sometime around Halloween in 1975, but was only part of the live set for three months; typically it was played alongside "Approximate", as the two songs displayed an odd contrast and Zappa embraced oddities. Much like "Zoot Allures'" closing track "Disco Boy", it mocks the disco culture of the 1970s, but unlike "Disco Boy", the song directly focuses on the dancing aspect of the culture. Specifically, the character Zappa is singing as cannot help but dance, despite how awful he is at it. He refers to his dancing as "social suicide" and says, "The beat goes on and I'm so wrong." He mentions as part of the reason for his bad dancing that, "One of my legs is shorter than the other," a reference to a severe injury Zappa sustained at the Rainbow Theatre in 1971. Soon, it inspired crazy dance moves to mock disco dancers, and this was especially relevant, as disco was on its decline. "Dancin' Fool" charted at 45 on the U.S. charts, making it Zappa's 2nd highest charting single, behind his 1982 song, Valley Girl. The song was nominated for the Grammy award for "Best Male Vocal", but did not win. It was included on Zappa's best of compilation, "Strictly Commercial".
Document 7: List of Marilyn Manson band members: Throughout the band's history, Marilyn Manson has only had one consistent member, being Marilyn Manson himself. This is a timeline of all of the band members since their formation in 1989. Most, if not all, members of the band have contributed performances (either live or in-studio) on instruments other than their primary ones. For instance, Gacy has played theremin and calliope, Manson has played pan flute, harpsichord, keyboards, and guitar, and Berkowitz has been credited with bass guitar and drum machines. Keyboardists Madonna Wayne Gacy and Chris Vrenna have also performed additional percussion on-stage, and current touring keyboardist Spencer Rollins plays additional guitar live. Further details on these contributions can be found in the individual members' articles, and in the articles on the band's albums.
Document 8: Tommy Coster: Thomas Joseph Coster, Jr. (born June 10, 1966), known as Tommy Coster, is an American keyboardist and composer. He is the son of Santana keyboardist Tom Coster. He has composed music for Interscope, Universal, Aftermath, Shady Records, G-Unit, For Life, Def Jam, AVEX. He has composed songs with such artists as Dr. Dre, Eminem and 50 Cent. In 2000 he co-wrote the single "The Real Slim Shady" with Dr. Dre and Eminem.
Document 9: Tommy Aldridge: Tommy Aldridge (born August 15, 1950) is an American heavy metal and hard rock drummer. Aldridge is noted for his work with numerous bands and artists since the 1970s, such as Black Oak Arkansas, Pat Travers Band, Ozzy Osbourne, Gary Moore, Whitesnake, Ted Nugent, Thin Lizzy, Vinnie Moore & Yngwie Malmsteen.
Document 10: P. D. Q. Bach: P.D.Q.Bach is a fictitious composer invented by musical satirist "Professor" Peter Schickele. Schickele developed a five-decade-long career, performing the "discovered" works of the "only forgotten son" of the Bach family. Schickele's music combines parodies of musicological scholarship, the conventions of Baroque and classical music, and slapstick. The name "P.D.Q." is a parody of the three-part names given to some members of the Bach family that are commonly reduced to initials, such as C.P.E., for Carl Philipp Emanuel Bach. "PDQ" is an initialism for "pretty damned quick".
Document 11: Andy Warhol: Andy Warhol ( ; born Andrew Warhola; August 6, 1928 – February 22, 1987) was an American artist, director and producer who was a leading figure in the visual art movement known as pop art. His works explore the relationship between artistic expression, celebrity culture, and advertising that flourished by the 1960s, and span a variety of media, including painting, silkscreening, photography, film, and sculpture. Some of his best known works include the silkscreen paintings "Campbell's Soup Cans" (1962) and "Marilyn Diptych" (1962), the experimental film "Chelsea Girls" (1966), and the multimedia events known as the "Exploding Plastic Inevitable" (1966–67).
Document 12: Tommy Mars: Tommy Mars (born Thomas Mariano on October 26, 1951) is an American keyboard player known for his work with Frank Zappa.
Document 13: Tomo Miličević: Tomislav "Tomo" Miličević (] ; born September 3, 1979) is an American musician and record producer best known as the lead guitarist of rock band Thirty Seconds to Mars. Born in Sarajevo but raised in the United States, Miličević moved to Troy, Michigan in the early 1980s, where he became active in the local heavy metal scene and played in a number of bands, co-founding Morphic. In 2003, he joined Thirty Seconds to Mars, with whom he achieved worldwide recognition in the mid-2000s after recording the band's second album "A Beautiful Lie" (2005). Its full-length follow-ups, "This Is War" (2009) and "Love, Lust, Faith and Dreams" (2013), received further critical and commercial success.
Document 14: Captain Beefheart: Don Van Vliet ( , born Don Glen Vliet; January 15, 1941 – December 17, 2010) was an American singer, songwriter, musician and artist best known by the stage name Captain Beefheart. His musical work was conducted with a rotating ensemble of musicians called the Magic Band (1964–1982), with whom he recorded 13 studio albums. Noted for his powerful singing voice and his wide vocal range, Van Vliet also played the harmonica, saxophone, and numerous other wind instruments. His music integrated blues, rock, psychedelia, and free jazz with contemporary experimental composition and the avant-garde. Beefheart was also known for often constructing myths about his life and for exercising an almost dictatorial control over his supporting musicians.
Document 15: Brian Eno: Brian Peter George St John le Baptiste de la Salle Eno, RDI ( ; born 15 May 1948 and originally christened Brian Peter George Eno) is an English musician, composer, record producer, singer, writer, and visual artist. He is best known for his pioneering work in rock, ambient, pop, and electronic music. A self-described "non-musician", Eno has helped to introduce a variety of unique conceptual approaches and recording techniques into contemporary music, advocating a methodology of "theory over practice" throughout his career. He has been described as one of popular music's most influential and innovative figures.
ground_truth: Frank Zappa