Background: Tin Machine were an Anglo-American hard rock group formed in 1988, notable for being fronted by English singer-songwriter David Bowie. The band consisted of Bowie on lead vocals, sax and guitar, Reeves Gabrels on guitar, Tony Fox Sales on bass, and Hunt Sales on drums. Both Tony and Hunt are the sons of comedian Soupy Sales. Guitarist Kevin Armstrong was an unofficial fifth member of the band, playing on the first studio album and both tours.
Context: The band's self-titled first album was recorded in late 1988 and early 1989. It produced mixed but generally positive reviews upon release in May 1989, picking up favourable comparisons with Bowie's two more recent solo albums. Commercially, the album initially sold well, reaching No. 3 in the UK Albums Chart, but sales quickly tailed off. Gabrels claimed in 1991 that album sales from the first album were "ten times better" than he had anticipated. At the time of the release of the album, Bowie was enthusiastic about the band and the work they'd done, and felt that band had in them "another two albums at least."  Contrary to common reports, the band's first live performance together wasn't at the International Rock Awards Show on 31 May 1989. Prior to that show, the band played an unannounced show in Nassau. Bowie recalled "We showed up at a club in Nassau where we were recording and did four or five songs. We went down to the club and just did 'em." Added Gabrels, "We just walked up on stage and you could hear all these voices whispering, 'That's David Bowie! No, it can't be David Bowie, he's got a beard!'"  The band recognized that some fans and critics didn't like Bowie's new role in the band. Said Tony Sales, "Mainly, people are pissed off because David's not doing 'David Bowie.'" Bowie confirmed that Tin Machine live shows would be "non-theatrical" in contrast to his most recent tour.  The band undertook a low-key tour in small venues between 14 June and 3 July 1989, before further recording sessions in Sydney, Australia. During these sessions Tin Machine contributed to a surfing compilation album, Beyond the Beach, with a new instrumental song titled "Needles on the Beach".
Question: did they have any live performances?
Answer: the band played an unannounced show in Nassau.

Question:
Carlos Santana  audio  (born July 20, 1947) is a Mexican and American musician who first became famous in the late 1960s and early 1970s with his band, Santana, which pioneered a fusion of rock and Latin American jazz. The band's sound featured his melodic, blues-based guitar lines set against Latin and African rhythms featuring percussion instruments such as timbales and congas not generally heard in rock music. Santana continued to work in these forms over the following decades. He experienced a resurgence of popularity and critical acclaim in the late 1990s.
Carlos Santana's distinctive guitar tone is produced by PRS Santana signature guitars plugged into multiple amplifiers. The amps consist of a Mesa Boogie Mark I, Dumble Overdrive Reverb and more recently a Bludotone amplifier. Santana compares the tonal qualities of each amplifier to that of a singer producing head/nasal tones, chest tones, and belly tones. A three-way amp switcher is employed on Carlos's pedal board to enable him to switch between amps. Often the unique tones of each amplifier are blended together, complementing each other producing a richer tone.  He also put the "Boogie" in Mesa Boogie. Santana is credited with coining the popular Mesa amplifier name when he tried one and exclaimed, "That little thing really Boogies!"  Specifically, Santana combines a Mesa/Boogie Mark I head running through a Boogie cabinet with Altec 417-8H (or recently JBL E120s) speakers, and a Dumble Overdrive Reverb and/or a Dumble Overdrive Special running through a Brown or Marshall 4x12 cabinet with Celestion G12M "Greenback" speakers, depending on the desired sound. Shure KSM-32 microphones are used to pick up the sound, going to the PA. Additionally, a Fender Cyber-Twin Amp is mostly used at home.  During his early career Santana used a GMT transistor amplifier stack and a silverface Fender Twin. The GMT 226A rig was used at the Woodstock concert as well as during recording Santana's debut album. During this era Santana had also begun to use the Fender Twin, which was also used on the debut and proceedingly at the recording sessions of Abraxas.
Answer this question using a quote from the text above:

Why are the amplifiers important?

Answer:


Problem: Background: Joshua Daniel White (February 11, 1914 - September 5, 1969) was an American singer, guitarist, songwriter, actor and civil rights activist. He also recorded under the names Pinewood Tom and Tippy Barton in the 1930s. White grew up in the South during the 1920s and 1930s. He became a prominent race records artist, with a prolific output of recordings in genres including Piedmont blues, country blues, gospel music, and social protest songs.
Context: White was in many senses a trailblazer: popular country bluesman in the early 1930s, responsible for introducing a mass white audience to folk-blues in the 1940s, and the first black singer-guitarist to star in Hollywood films and on Broadway. On one hand he was famous for his civil rights songs, which made him a favorite of the Roosevelts, and on the other he was known for his sexy stage persona (a first for a black male artist).  He was the first black singer to give a White House command performance (1941), to perform in previously segregated hotels (1942), to get a million-selling record ("One Meatball", 1944), and the first to make a solo concert tour of America (1945). He was also the first folk and blues artist to perform in a nightclub, the first to tour internationally, and (along with Lead Belly and Woody Guthrie) the first to be honored with a US postage stamp.  White and Libby Holman became the first mixed-race male and female artists to perform together, record together and tour together in previously segregated venues across the United States. They continued performing off and on for the next six years, while making an album and a film together.  White was seen as an influence on hundreds of artists of diverse musical styles, including: Pete Seeger, Lee Hays, Oscar Brand, Ed McCurdy, Lonnie Donegan, Alexis Korner, Cy Coleman, Elvis Presley, Merle Travis, Joel Grey, Bob Gibson, Dave Van Ronk, Phish, Clancy Brothers and Tommy Makem, Shel Silverstein, John Fahey, Bob Dylan, Peter, Paul and Mary, Judy Collins, Roger McGuinn, David Crosby, Mike Bloomfield, Danny Kalb, Ry Cooder, John Fogerty, Don McLean, Robert Plant and Eva Cassidy; in addition to those African-American artists, such as Blind Boy Fuller, Robert Johnson, Brownie McGhee, Lena Horne, Nat King Cole, Pearl Primus, Josephine Premice, Eartha Kitt, Harry Belafonte, Odetta, Ray Charles, Josh White, Jr., Jackie Washington, the Chambers Brothers, and Richie Havens, who in the footsteps of White were also able to break considerable barriers that had hampered African-American artists in the past.
Question: What year was this
Answer:
1944