Question: Chris Carson has performed works by which composer of 9 symphonies?

Ludwig van Beethoven ( , ; ] ; baptised 17 December 177026 March 1827) was a German composer and pianist.  A crucial figure in the transition between the Classical and Romantic eras in Western art music, he remains one of the most famous and influential of all composers.  His best-known compositions include 9 symphonies, 5 piano concertos, 1 violin concerto, 32 piano sonatas, 16 string quartets, his great Mass the "Missa solemnis", and one opera, "Fidelio". <SEP> Chris Carson (born August 21, 1985) is an American pianist and composer native to San Antonio, Texas.  Growing up in Houston, Texas, he attended High School for the Performing and Visual Arts and studied with Timothy Hester, a Juilliard graduate.  Other teachers have included Abbey Simon, Ludmilla Lifson, and Victor Rosenbaum.  Mr. Carson has been a very successful competitor, capturing many awards and top ratings in competitions throughout his career.  He recently was the inaugural winner of the Pacifica Quartet Competition, and, in 2009, performed the Brahms piano quintet with the Grammy-award winning group.  He has received first prize in numerous concerto competitions, and has appeared as a soloist with three orchestras over the past few years, most recently with Orchesterakademie in Germany in 2009, performing a repertoire of Beethoven, Liszt, Shostakovich, and Mendelssohn.  Mr. Carson's performances have taken him to New York, Dallas, Chicago, Boston, Houston, Montreal and overseas to venues in Italy, France, and Germany.  An active composer, Carson premiered his Fantasy for Piano in Italy in 2006 and is very involved in composing both sacred and secular music.  Mr. Carson is also an active teacher in the Boston area, coaching both pianists and vocalists.  He currently resides in Boston, where he attended Longy School of Music for his master's degree.  He is now a music director, teacher, and freelancer, in addition to being the choral accompanist for the Belmont Public Schools, in Belmont, Massachusetts. <SEP> The Symphony No. 9 in D minor, Op.  125, is the final complete symphony composed from 1822 to 1824 by the German composer Ludwig van Beethoven.  It was first performed in Vienna on 7 May 1824.  The symphony is one of the best-known works in common practice music.  It is widely viewed by critics as one of Beethoven's greatest works, the pinnacle of musical Classicism, and one of the greatest compositions in the western musical canon.  The symphony was the first example of a major composer using voices in a symphony (thus making it a choral symphony).  The words are sung during the final movement by four vocal soloists and a chorus.  They were taken from the "Ode to Joy", a poem written by Friedrich Schiller in 1785 and revised in 1803, with text additions made by the composer.  In the 2010s, it stands as one of the most performed symphonies in the world. <SEP> Arvo Pärt (] ; born 11 September 1935) is an Estonian composer of classical and religious music.  Since the late 1970s, Pärt has worked in a minimalist style that employs his self-invented compositional technique, tintinnabuli.  Pärt's music is in part inspired by Gregorian chant.  His most performed works include "Fratres" (1977), "Spiegel im Spiegel" (1978), and "Für Alina" (1976).  Pärt has been the most performed living composer in the world for five consecutive years.