Throughout the latter part of the 2000s, Sakamoto collaborated on several projects with visual artist Shiro Takatani, including the installations LIFE - fluid, invisible, inaudible... (2007-2013), commissioned by YCAM, Yamaguchi, collapsed and silence spins at the Museum of Contemporary Art Tokyo in 2012 and 2013 Sharjah Biennial (U.A.E.), LIFE-WELL in 2013 and a special version for Park Hyatt Tokyo's 20th anniversary in 2014, and he did music for the joint performance LIFE-WELL featuring the actor Noh/Kyogen Mansai Nomura, and for Shiro Takatani's performance ST/LL in 2015.  In 2013, Sakamoto was a jury member at the 70th Venice International Film Festival. The jury viewed 20 films and was chaired by filmmaker Bernardo Bertolucci.  In 2014, Sakamoto became the first Guest Artistic Director of The Sapporo International Art Festival 2014 (SIAF2014). On July 10, Sakamoto released a statement indicating that he had been diagnosed with oropharyngeal cancer in late June of the same year. He announced a break from his work while he sought treatment and recovery. On August 3, 2015, Sakamoto posted on his website that he was "in great shape ... I am thinking about returning to work" and announced that he would be providing music for Yoji Yamada's Haha to Kuraseba (Living with My Mother). In 2015, Sakamoto also composed the score for the Alejandro Gonzalez Inarritu's film, The Revenant.  In January 2017 it was announced that Sakamoto would release a solo album in April 2017 through Milan Records; the new album, titled async, was released on March 29, 2017 to critical acclaim. In February 2018, he was selected to be on the jury for the main competition section of the 68th Berlin International Film Festival.  Sakamoto's production credits represent a prolific career in this role. In 1983, he produced Mari Iijima's debut album Rose, the same year that the Yellow Magic Orchestra was disbanded. Sakamoto subsequently worked with artists such as Thomas Dolby; Aztec Camera, on the Dreamland (1993) album; and Imai Miki, co-producing her 1994 album A Place In The Sun.  Roddy Frame, who worked with Sakamoto as a member of Aztec Camera, explained in a 1993 interview preceding the release of Dreamland that he had had to wait a lengthy period of time before he was able to work with Sakamoto, who wrote two soundtracks, a solo album and the music for the opening ceremony at the Barcelona Olympics, prior to working with Frame over four weeks in a New York studio. Frame said that he was impressed by the work of YMO and the Merry Christmas Mr Lawrence soundtrack, explaining: "That's where you realise that the atmosphere around his compositions is actually in the writing - it's got nothing to do with synthesisers." Frame's decision to ask Sakamoto was finalized after he saw his performance at the Japan Festival that was held in London, United Kingdom. Of his experience recording with Sakamoto, Frame said:  He's got this reputation as a boffin, a professor of music who sits in front of a computer screen. But he's more intuitive than that, and he's always trying to corrupt what he knows. Halfway through the day in the studio, he will stop and play some hip hop or some house for 10 minutes, and then go back to what he was doing. He's always trying to trip himself up like that, and to discover new things. Just before we worked together he'd been out in Borneo, I think, with a DAT machine, looking for new sounds.  Sakamoto began working in films, as a composer and actor, in Nagisa Oshima's Merry Christmas Mr. Lawrence (1983), for which he composed the soundtrack, title theme, and the duet "Forbidden Colours" with David Sylvian. Sakamoto later composed Bernardo Bertolucci's The Last Emperor (1987), which earned him the Academy Award with fellow composers David Byrne and Cong Su. In that same year, he composed the score to the cult-classic anime film Royal Space Force: The Wings of Honneamise. Sakamoto also went on to compose the score of the opening ceremony for the 1992 Summer Olympics in Barcelona, Spain, telecast live to an audience of over a billion viewers.  Other films scored by Sakamoto include Pedro Almodovar's Tacones lejanos (High Heels) (1991), Bertolucci's The Little Buddha (1993), Oliver Stone's Wild Palms (1993), John Maybury's Love Is the Devil: Study for a Portrait of Francis Bacon (1998), Brian De Palma's Snake Eyes (1998) and Femme Fatale (2002), Oshima's Gohatto (1999), Jun Ichikawa's (director of the Mitsui ReHouse commercial from 1997 to 1999 starring Chizuru Ikewaki and Mao Inoue) Tony Takitani (2005).  Several tracks from Sakamoto's earlier solo albums have also appeared in film soundtracks. In particular, variations of "Chinsagu No Hana" (from Beauty) and "Bibo No Aozora" (from 1996) provide the poignant closing pieces for Sue Brooks's Japanese Story (2003) and Alejandro Gonzalez Inarritu's Babel (2006), respectively. In 2015, Sakamoto teamed up with Inarritu to score his film, The Revenant starring Leonardo DiCaprio and Tom Hardy.  Sakamoto has also acted in several films: perhaps his most notable performance was as the conflicted Captain Yonoi in Merry Christmas Mr Lawrence, alongside Takeshi Kitano and British rock singer David Bowie. He also played roles in The Last Emperor (as Masahiko Amakasu) and Madonna's "Rain" music video.

Answer this question "How did his career begin?" by extracting the answer from the text above.
Sakamoto began working in films, as a composer and actor,