Question: A symphony of Three Orchestras was dedicated to someone who died in what year?

Context articles: Netherlands Philharmonic Orchestra
A Symphony of Three Orchestras
Pierre Boulez
Casa da Música
Erick Friedman
Boston Youth Symphony Orchestras
Anthony Marwood
League of American Orchestras
Willis Page
Greater Dallas Youth Orchestra

The Netherlands Philharmonic Orchestra (NedPhO; Dutch, Nederlands Philharmonisch Orkest) is a symphony orchestra based primarily in Amsterdam, Netherlands.
 The NedPhO was formed in 1985 from the merger of three orchestras: the Amsterdam Philharmonic Orchestra, the Utrecht Symphony Orchestra Utrecht and the Netherlands Chamber Orchestra.
 The Netherlands Chamber Orchestra (Dutch, "Nederlands Kamer Orkest", NKO) continues to give concerts under its own name, with both it and the NedPhO as part of the "Stichting Nederlands Philharmonisch Orkest" (Netherlands Philharmonic Orchestra Foundation), which is headquartered in Amsterdam.
 The NedPhO Foundation comprises the largest orchestra organisation in the Netherlands, with 130 musicians on staff.
A Symphony of Three Orchestras is an orchestra composition by the American composer Elliott Carter.
 The work was commissioned by the New York Philharmonic through a grant from the National Endowment for the Arts.
 It was composed from June through December 1976 and was first performed in New York City on February 17, 1977 by the New York Philharmonic under the conductor Pierre Boulez.
 The composition is dedicated to Boulez and the New York Philharmonic.
Pierre Louis Joseph Boulez CBE (] ; 26 March 1925 – 5 January 2016) was a French composer, conductor, writer and organiser of institutions.
 He was one of the dominant figures of the post-war classical music world.
The Casa da Música (literally the "House of Music") is a Portuguese concert hall in civil parish of Cedofeita, Santo Ildefonso, Sé, Miragaia, São Nicolau e Vitória, in the municipality of Porto, in northern Portugal.
 It houses the cultural institution "Fundação Casa da Música", and three orchestras: "Orquestra Nacional do Porto" ("Porto National Orchestra"), "Orquestra Barroca" ("Baroque Orchestra") and "Remix Ensemble".
Erick Friedman (August 14, 1939 – March 30, 2004) is considered by many as one of the greatest American born violinists of the past century.
 Erick Friedman's illustrious career took him to many of the great concert stages of the world appearing as guest soloist with most of the great orchestras throughout the United States and abroad: the New York Philharmonic and the National Symphony, the orchestras of New Orleans, Pittsburgh, Miami, Detroit, Indianapolis, the Berlin Philharmonic, Orchestre de Paris and many other major orchestras throughout the world.
 Karajan, Stokowski, Steinberg, Leinsdorf, Previn, and Ozawa are some of the celebrated conductors with whom he collaborated with.
 Mr. Friedman's recordings for RCA Victor earned him accolades including the prestigious Grammy Award.
 Mr. Friedman has been featured playing the Bartók Violin Concerto in an A&E Television Production on Bartók which was released worldwide.
 His tribute to Fritz Kreisler is available on VHS at online vendors including Amazon.
 Mario Castelnuovo-Tedesco, Isadore Freed, Ezra Laderman, and Laurent Petitgirard are some of the internationally celebrated composers who wrote and/or dedicated compositions to him.
 Erick Friedman studied at The Juilliard School with Ivan Galamian.
 At age fourteen he began studies with Nathan Milstein and later worked with the legendary violinist Jascha Heifetz with whom he recorded the Bach Double Violin Concerto for RCA Victor.
 Mr. Friedman and Mr. Heifetz can be seen performing the Bach Double in the 1962 TV series Heifeitz Masterclass.
 In the early 1970s, Mr. Friedman was on the violin faculty of the North Carolina School of the Arts.
 He later held faculty positions at the Manhattan School of Music, Southern Methodist University, and the Yale School of Music.
The Boston Youth Symphony Orchestras (BYSO) is a youth orchestra based in Boston, Massachusetts under the artistic leadership of Music Director, Federico Cortese.
 Since 1958, BYSO has served thousands of young musicians from throughout New England with three full symphonic orchestras, two young string training orchestras, six chamber orchestras, a preparatory wind ensemble, a chamber music program and a nationally recognized string training program for underrepresented youth from inner-city communities called the Intensive Community Program (ICP).
Anthony Marwood is a solo classical violinist, appearing in concerto performances worldwide with orchestras such as the Boston Symphony, LA Philharmonic, St Louis Symphony, the Philharmonia Orchestra, the UK's BBC orchestras, the City of Birmingham Symphony Orchestra, New Zealand Symphony and the Sydney Symphony.
 He enjoys regular collaborations as soloist/director with orchestras such as the Academy of St Martin in the Fields, the Australian Chamber Orchestra, Les Violons du Roy in Quebec and the Irish Chamber Orchestra, of which he was Artistic Director from 2006-2011.
 From 1995-2012 he was a member of the Florestan Trio with Susan Tomes and Richard Lester.
 In 2006 he won the Royal Philharmonic Society's Instrumentalist of the Year Award.
 He was educated at King Edward VI Grammar School in Chelmsford, at the Royal Academy of Music and the Guildhall School of Music and Drama, and studied with Emanuel Hurwitz and David Takeno.
The League of American Orchestras, formerly the American Symphony Orchestra League, is a North American Musical Organization consisting of a network of approximately 800 orchestras.
 “Dedicated to helping orchestras meet the challenges of the twenty-first century,” the League consists of leading symphony and philharmonic orchestras, collegiate orchestras, community ensembles, and youth and student ensembles.
 The only national organization devoted and focused on elevating the orchestra industry, the League was founded in 1942 and later chartered by Congress in 1962.
 The League creates a network of all facets of the industry, including administrators, managers, board members, business partners, volunteers, and musicians.
 Each year this organization presents two awards: the Gold Baton Award and the Helen M. Thompson Award.
 The League affects the orchestral world through several outreach experiences, dedicated advocacy to music education and especially orchestral education, and maintaining and communicating a breadth of information and pertinent topics in publications.
 It has also developed detailed antitrust policy and guidelines in order to comply with the landscape of the industry.
 The League is a leading force in work on legislation regarding orchestras and support for the arts.
Willis Page (born September 18, 1918, Rochester, N.Y., died January 9, 2013.)
, was a musician and symphony orchestra conductor.
 He conducted three major US orchestras – in Nashville, Tennessee, Des Moines, Iowa, and Jacksonville, Florida.
 He was also the associate conductor in Buffalo, New York, where he conducted three quarters of all concerts and has been guest conductor for several orchestras including the Boston Pops Orchestra (seven times), Denver, St Louis, Rochester, Hartford, Muncie, Yomiuri, Toronto and Jerusalem.
 He was the first US conductor of a major Japanese symphony orchestra, the Yomiuri Nippon Symphony Orchestra.
 He was the first conductor to hire black musicians in a classical orchestra in the USA.
The Greater Dallas Youth Orchestra (GDYO) is a youth orchestra in Dallas, Texas, USA, founded in 1972.
 GDYO has grown from a single orchestra of 35 members to a program of over 450 members.
 The principal group is the eponymous symphony, presently under the direction of the Maestro Richard Giangiulio.
 The organization as a whole comprises eight groups, which together provide musical opportunities for students from ages five to eighteen.
 Auditions are held each spring.
 Coaches and Judges come from the Dallas Symphony Orchestra, Dallas Opera, Dallas Winds, and area universities and orchestras.
 Ensembles in the program include two full orchestras, three string orchestras, a wind ensemble, a flute choir, and eight jazz combos.