Title: Harp Concerto (Higdon)
Content:  The Harp Concerto is a composition for harp and orchestra by the American composer Jennifer Higdon. It was commissioned by the Rochester Philharmonic Orchestra, Harrisburg Symphony Orchestra, Baton Rouge Symphony Orchestra, Fargo-Moorhead Symphony Orchestra, Lansing Symphony Orchestra, and the Oklahoma City Philharmonic. The work was completed in early 2018 and was given its world premiere at the Eastman Theatre in Rochester, New York, by the harpist Yolanda Kondonassis and the Rochester Philharmonic Orchestra under the conductor Ward Stare on May 10, 2018. The piece is dedicated to Yolanda Kondonassis.
Title: Harp concerto
Content:  A harp concerto is a type of musical composition composed for a solo harp player accompanied by a large ensemble, such as a concert band or orchestra.
Title: Harp Concerto (Ginastera)
Content:  The Harp Concerto by Alberto Ginastera was first performed in 1965. It was promoted in the 1950s by Edna Phillips, the harpist of the Philadelphia Orchestra. Philips had retired by the time the work was ready to be premiered, and the solo part was played by the Spanish harpist Nicanor Zabaleta with the Philadelphia Orchestra, conducted by Eugene Ormandy. 2016, the centenary of the composer's birth, saw a number of performances including one by the French harpist Marie-Pierre Langlamet and the Berlin Philharmonic conducted by Juanjo Mena.
Title: Harp Concerto (Glière)
Content: Osian Ellis, London Symphony Orchestra, Richard Bonynge (1968) ; Olga Erdeli, Moscow Radio Large Symphony Orchestra, Boris Khaikin and Gennady Rozhdestvensky (1968) ; Catherine Michel, Luxembourg Radio/Television Symphony Orchestra, Louis de Froment (1992) ; Rachel Masters, City of London Sinfonia, Richard Hickox (1993) ; Gretchen Van Hoesen, New Symphony Orchestra, Rossen Milanov (2002) ; Emmanuel Ceysson, Bavarian Radio Symphony Orchestra, Lawrence Renes (2009) ; Claire Jones, English Chamber Orchestra, Paul Watkins (2010) ; Beste Toparlak, Bilkent Symphony Orchestra, Isin Metin (2014) The Harp Concerto in E-flat has been recorded a number of times:
Title: Concerto
Content:  Harp Concerto, Op. 295 (Bochsa) ; Elias Parish Alvars: Harp Concertos Harp Concerto in G minor, Op. 81 (Parish Alvars) and Harp Concerto, Op. 98 (Parish Alvars) ; Carl Reinecke's Harp Concerto, Op. 182 (Reinecke) ; John Thomas's Harp Concerto No. 1 (Thomas) ; Henriette Renié's Harp Concerto (Renié) Reinhold Glière's Harp Concerto ; Joseph Jongen's Harp Concerto ; Joaquín Rodrigo's Concierto serenata ; André Jolivet's Concerto for Harp and Chamber Orchestra (1952) ; Darius Milhaud's Harp Concerto, Op. 323 (1953) ; Heitor Villa-Lobos's Harp Concerto ; Alberto Ginastera's Harp Concerto ; Einojuhani Rautavaara's Harp Concerto (2000) Baroque era: Classical era: Romantic era: 20th century:
Title: List of compositions for harp
Content:  C Major (1801) ; Ann Carr-Boyd ; Fantasy for Harp and Orchestra (1996) ; Paul Constantinescu ; Harp Concerto ; Barry Conyngham ; Cloudlines: Concerto for harp and orchestra (1990) ; Henry Cowell ; Harp Concerto, L. 947 (1965) ; Jean-Michel Damase ; Ballade pour harpe et orchestre à cordes ; Concertino pour harpe et instruments à cordes ; Carl Ditters von Dittersdorf ; Concerto for Harp ; Ernő Dohnányi ; Concertino for harp and chamber orchestra (1952) ; Jan Ladislav Dussek ; Harp Concerto in E flat, C. 53/265 (1789) ; Harp Concerto in F, C. 78/266 (1792) ; 
Title: List of compositions for harp
Content: William Alwyn ; Concerto for Oboe, harp and strings (1944) ; Kalevi Aho ; Concerto for Cor anglais, Harp and Orchestra (2014) ; Henry Cowell ; Duo concertante for flute, harp, and orchestra, L. 894 (1961) ; Hans Werner Henze ; Doppio Concerto for oboe, harp & strings (1966) ; Paul Hindemith ; Konzertmusik for brass, harp, and piano, Op. 49 (1930) ; Concerto for woodwinds, harp, and orchestra (1949) ; Lowell Liebermann ; Concerto for Flute, Harp and Orchestra, Op.48 (1995) ; Frank Martin ; Petite symphonie concertante for harp, harpsichord, piano and double string orchestra, op.54 (1944) ; Fabio Mengozzi ; Auriga II (piano, harp and string orchestra) ; Wolfgang Amadeus Mozart ; Concerto for flute and harp in C, K. 299 (1778) ; Louis Spohr ; Concertante for violin and harp in G, WoO 13 (1806) ; Concertante for violin and harp in E minor, WoO 14 (1807) 
Title: Concerto
Content: Handel's Harp Concerto, HWV 294 (a.k.a. Concerto for harp or organ and orchestra, HWV 294) Jean-Baptiste Krumpholz: Harp Concertos Harp Concerto No. 5 (Krumpholz) and Harp Concerto No. 6 (Krumpholz) ; Francesco Petrini: Harp Concertos Harp Concerto No. 1 (Petrini), Harp Concerto No. 2 (Petrini) and Harp Concerto No. 4 (Petrini) ; Ernst Eichner's Harp Concerto in D major, Op. 9 (Eichner) ; Jan Ladislav Dussek: Harp Concertos Harp Concerto, Op. 15 (Dussek), Harp Concerto, Op. 30 (Dussek) and Harp Concerto in B-flat major (Dussek) ; François-Adrien Boieldieu's Harp Concerto in C major (Boieldieu) Nicolas-Charles Bochsa: Harp Concertos Harp Concerto, Op. 15 No. 1 (Bochsa) 
Title: List of compositions for harp
Content:  Concerto in C, C. 129/267 (1795) ; The Favourite Concerto in F, C. 158 (1798?) ; Harp Concerto in B flat, C. 264 (1813), lost ; Ernst Eichner ; Harp Concerto in C (1769) ; Harp Concerto in D (1771?) ; Alberto Ginastera ; Harp Concerto, Op. 25 (1956) ; Reinhold Glière ; Harp Concerto in E flat, Op. 74 (1938) ; Radamés Gnattali ; Concerto for harp and string orchestra (1957) ; George Frideric Handel ; Concerto in B-flat major for harp, Op. 4, No. 6, HWV 294 (1738) ; Patrick Hawes ; Highgrove Suite for harp and string 
Title: Harp Concerto (Higdon)
Content:  Reviewing the world premiere, Daniel J. Kushner of City Newspaper praised the concerto, writing, "What started out as a somewhat muted affair quickly became a sweeping scape with symphonic tendencies. Higdon was keen to showcase the harp's naturally rich harmonic colors, and there was something prayerful about Kondonassis's playing, particularly in the quieter moments." Reviewing a recording of the work, Tal Agam of The Classic Review similarly described it as "an exciting and truly original new piece, that can certainly enjoy success with the public." In 2020, Higdon won the Grammy Award for Best Contemporary Classical Composition for her composition of the piece. Kondonassis was nominated for her performance of the concerto with Ward Stare and the Rochester Philharmonic Orchestra, but did not win.

Question: Who was the composer of Harp Concerto?
Answer: Alberto Ginastera.
Alberto Evaristo Ginastera.