Problem: Background: Jean-Michel Basquiat was born in Brooklyn, New York, on December 22, 1960, shortly after the death of his elder brother, Max. He was the second of four children of Matilde Andrades (July 28, 1934 - November 17, 2008) and Gerard Basquiat (1930 - July 7, 2013). He had two younger sisters: Lisane, born in 1964, and Jeanine, born in 1967. His father, Gerard Basquiat, was born in Port-au-Prince, Haiti, and his mother, Matilde Basquiat, who was of Puerto Rican descent, was born in Brooklyn, New York.
Context: Basquiat sold his first painting in 1981, and by 1982, spurred by the Neo-Expressionist art boom, his work was in great demand. In 1985, he was featured on the cover of The New York Times Magazine in connection with an article on the newly exuberant international art market; this was unprecedented for an African-American artist, and for an artist so young. Since Basquiat's death in 1988, his market has developed steadily - in line with overall art market trends - with a dramatic peak in 2007 when, at the height of the art market boom, the global auction volume for his work was over $115 million. Brett Gorvy, deputy chairman of Christie's, is quoted describing Basquiat's market as "two-tiered. [...] The most coveted material is rare, generally dating from the best period, 1981-83." In 2001 New York artist and con-artist Alfredo Martinez was charged by the Federal Bureau of Investigation with attempting to deceive two art dealers by selling them $185,000 worth of fake drawings put forth as being the work of Basquiat. The charges against Martinez, which landed him in Manhattan's Metropolitan Correction Center on June 19, 2002, involved an alleged scheme to sell fake Basquiat drawings, accompanied by forged certificates of authenticity. Until 2002, the highest amount paid for an original work of Basquiat's was US$3,302,500, set on November 12, 1998, at Christie's. In 2002, Basquiat's Profit I (1982), a large piece measuring 86.5 by 157.5 inches (220 by 400 cm), was set for auction again at Christie's by drummer Lars Ulrich of the heavy metal band Metallica. It sold for US$5,509,500. The proceedings of the auction are documented in the film Some Kind of Monster. In 2008, at another auction at Christie's, Ulrich sold a 1982 Basquiat piece, Untitled (Boxer), for US $13,522,500 to an anonymous telephone bidder. Another record price for a Basquiat painting was made in 2007, when an untitled Basquiat work from 1981 sold at Sotheby's in New York for US$14.6 million. In 2012, for the second year running, Basquiat was the most coveted contemporary (i.e. born after 1945) artist at auction, with EUR80 million in overall sales. That year, his Untitled (1981), a painting of a haloed, black-headed man with a bright red skeletal body, depicted amid the artist's signature scrawls, was sold by Robert Lehrman for $16.3 million, well above its $12 million high estimate. A similar untitled piece, also undertaken in 1981 and formerly owned by the Israel Museum, sold for PS12.92 million at Christie's London, setting a world auction record for Basquiat's work. In 2013, Basquiat's piece Dustheads sold for $48.8 million at Christie's. In 2016 an untitled piece sold at Christie's for $57.3 million to a Japanese businessman and collector, Yusaku Maezawa. In 2017, Yusaku purchased Basquiat's Untitled (1982), a powerful depiction of a skull, at auction for a record-setting US$110,487,500--the most ever paid for an American artwork and the sixth most expensive artwork sold at an auction, surpassing Andy Warhol's "Silver Car Crash (Double Disaster)" which sold in 2013 for $105 million.
Question: Who did he sell to?
Answer: art market

Problem: Background: Frank Vincent Zappa (December 21, 1940 - December 4, 1993) was an American musician, composer, activist and filmmaker. His work is 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 concrete 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.
Context: Zappa and the Mothers of Invention returned to Los Angeles in mid-1968, and the Zappas moved into a house on Laurel Canyon Boulevard, only to move again to one on Woodrow Wilson Drive. This was Zappa's home for the rest of his life. Despite being a success with fans in Europe, the Mothers of Invention were not faring well financially. Their first records were vocally oriented, but Zappa wrote more instrumental jazz and classical oriented music for the band's concerts, which confused audiences. Zappa felt that audiences failed to appreciate his "electrical chamber music". In 1969 there were nine band members and Zappa was supporting the group himself from his publishing royalties whether they played or not. 1969 was also the year Zappa, fed up with MGM Records' interference, left them for Warner Bros. Records' Reprise subsidiary where Zappa/Mothers recordings would bear the Bizarre Records imprint. In late 1969, Zappa broke up the band. He often cited the financial strain as the main reason, but also commented on the band members' lack of sufficient effort. Many band members were bitter about Zappa's decision, and some took it as a sign of Zappa's concern for perfection at the expense of human feeling. Others were irritated by 'his autocratic ways', exemplified by Zappa's never staying at the same hotel as the band members. Several members played for Zappa in years to come. Remaining recordings with the band from this period were collected on Weasels Ripped My Flesh and Burnt Weeny Sandwich (both released in 1970). After he disbanded the Mothers of Invention, Zappa released the acclaimed solo album Hot Rats (1969). It features, for the first time on record, Zappa playing extended guitar solos and contains one of his most enduring compositions, "Peaches en Regalia", which reappeared several times on future recordings. He was backed by jazz, blues and R&B session players including violinist Don "Sugarcane" Harris, drummers John Guerin and Paul Humphrey, multi-instrumentalist and previous member of the Mothers of Invention Ian Underwood, and multi-instrumentalist Shuggie Otis on bass, along with a guest appearance by Captain Beefheart (providing vocals to the only non-instrumental track, "Willie the Pimp"). It became a popular album in England, and had a major influence on the development of the jazz-rock fusion genre.
Question: Did they play with anybody famous?
Answer:
multi-instrumentalist Shuggie Otis on bass, along with a guest appearance by Captain Beefheart (providing vocals to the only non-instrumental track, "Willie the Pimp").