Question: Two Elegiac Melodies, Op. 34, is a composition in two movements for string orchestra by which Norwegian composer and pianist?
Context: Elegia (In English: Elegy; occasionally with the Finnish subtitle "Suru ", or "Sadness"), Op.  4/1, is a composition for string orchestra by the Finnish composer Leevi Madetoja, who wrote the piece in 1909 during his student years.  On 10 January 1910, Robert Kajanus, chief conductor of the Helsinki Orchestral Society, premiered the "Elegia" to great acclaim, with the piece described as the "first master work" of a budding "natural orchestral composer".  Madetoja subsequently designated the "Elegia" as the first number in his four-movement "Sinfoninen sarja" ("Symphonic Suite"), Op. 4, which the Helsinki Orchestral Society performed in its entirety under the composer's baton on 26 September 1910.  The suite's three other numbers are virtually unknown, and the "Elegia" typically is performed as a stand-alone concert piece.  Stylistically reminiscent of Tchaikovsky, it is, to date, Madetoja's most recorded and well-known orchestral composition, as well as the most enduringly popular of his many miniatures. The Concerto for Cello, Piano, and String Orchestra is a composition for solo cello, piano, and a large string orchestra by the American composer Ralph Shapey.  The work was composed for the cellist Joel Krosnick and the pianist Gilbert Kalish and was first performed at Tanglewood in 1989.  It was first performed by Krosnick, Kalish, and the Berkshire Music Chamber Orchestra under the composer on July 31, 1989.  The piece was a finalist for the 1990 Pulitzer Prize for Music and shared the top Kennedy Center Friedheim Award prize with William Kraft for "Veils and Variations for Horn and Orchestra". Edvard Hagerup Grieg (] ; 15 June 18434 September 1907) was a Norwegian composer and pianist.  He is widely considered one of the leading Romantic era composers, and his music is part of the standard classical repertoire worldwide.  His use and development of Norwegian folk music in his own compositions put the music of Norway in the international spectrum, as well as helping to develop a national identity, much as Jean Sibelius and Antonín Dvořák did in Finland and Bohemia, respectively. Elegiac Ode, Op. 21, is a musical composition by British composer Charles Villiers Stanford (1852–1924) written and first performed in 1884.  It is a four-movement work scored for baritone and soprano soloists, chorus and orchestra, Stanford's composition is a setting of Walt Whitman' s 1865 elegy, "When Lilacs Last in the Dooryard Bloom'd", mourning the death of American president Abraham Lincoln.  According to musicologist Jack Sullivan, Stanford's "Elegiac Ode" likely had reached a wider audience during Whitman's lifetime than his poems. The Concerto for Horn and Strings is a concerto for horn and string orchestra in three movements by the English composer Gordon Jacob.  The work was composed in 1951 for soloist Dennis Brain and premiered on 8 May 1951, with Jacob conducting the Riddick String Orchestra in Wigmore Hall, London.  The piece has been regarded as one of the most popular horn concertos of the 20th century. Two Elegiac Melodies, Op. 34, is a composition in two movements for string orchestra by Edvard Grieg, completed in 1880 and first published in 1881. Sir Edward Elgar's Introduction and Allegro for Strings, Op. 47, was composed in 1905 for performance in an all-Elgar concert by the newly formed London Symphony Orchestra.  Scored for string quartet and string orchestra, Elgar composed it to show off the players' virtuosity.  Though initial critical reception was lukewarm at best, the score soon came to be recognized as a masterpiece.  The work, which is roughly twelve to fourteen minutes in length, is like a multi-layered symphonic poem for string orchestra, with several prominent themes. Haruna Miyake (三宅 榛名 , Miyake Haruna , born 20 September 1942 in Tokyo) is a Japanese pianist and composer who also uses the name Haruna Shibata.  She was born in Tokyo and studied music there, making her debut as a pianist at age 14 playing Mozart with the Tokyo Symphony orchestra.  She continued her studies at the Juilliard School of Music in New York City, and afterward worked as a pianist and composer, touring in the United States.  She often collaborates with pianist and composer Yuji Takahashi.  Her composition "Poem for String Orchestra" received the Edward Benjamin Award. Conjurer: Concerto for Percussionist and String Orchestra (with optional Brass) is a concerto for a solo percussionist and string orchestra by the American composer John Corigliano.  The work was jointly commissioned for the percussionist Evelyn Glennie by the Pittsburgh Symphony Orchestra, the Nashville Symphony, the Royal Scottish National Orchestra, the Dallas Symphony Orchestra, the Calouste Gulbenkian Foundation, the Music Department (Lisbon), and the National Arts Centre Orchestra.  It was given its world premiere by Glennie and the Pittsburgh Symphony Orchestra under the direction of Marin Alsop in Pittsburgh on February 21, 2008. Carlos Duarte (born in Caracas on June 1, 1957; died April 13, 2003) was a Venezuelan composer and pianist.  His premier recital was at age 11 and at 16 he won a national award for composition (He obtained the prize for 3 consecutive years from 1973 to 1975).  He composed some pieces for piano and orchestra: "Ludios" (Ludus), "Sinfonietta La Mar" (Sea Sinfonietta), "Concierto de la Canción Triste" (Sad Song Concerto) and "Requiem para un Idiota" (Requiem for an Idiot).  In 1999 he composed a Quintet for the End of the Century (Quinteto para el Fin del Siglo).  The composer himself performed the first performances in the same year, with the Arpeggione Quartet (as a Piano Quintet) and the European Union Chamber Orchestra (as a Concerto for Piano and String Orchestra).  His last work was a Requiem, entitled "Requiem para un Idiota" (Requiem for an Idiot), for Piano (as his own voice), Chorus, 8 Clarinets, 8 Bassons, 8 Contrabassoons and 8 Double Basses.  The Caracas Municipal Symphony Orchestra (Orquesta Sinfónica Municipal de Caracas) posthumously premiered in April 30th, 2006 under the baton of Rodolfo Saglimbeni and Arnaldo Pizzolante playing the piano part.  Both are among the closest friends of Duarte.  He composed also the incidental piano music for "Jav & Jos", "The Last Minotaur" and "Clitemnestra" all of them performed by the "Theja" Theater Group in the nineties.  Between 1987 and 1990 he was the Pianist of the Caracas Municipal Symphony Orchestra.  He served as a professor at the Universidad Simón Bolívar Post-Graduate Music Faculty.
Answer: Edvard Hagerup Grieg