Please answer the following question: Information: - A virtuoso (from Italian "virtuoso" or , "virtuous", Late Latin "virtuosus", Latin "virtus", "virtue", "excellence", "skill", or "manliness") is an individual who possesses outstanding technical ability in a particular art or field such as fine arts, music, singing, playing a musical instrument, or composition. This word also refers to a person who has cultivated appreciation of artistic excellence, either as a connoisseur or collector. Virtuoso's plural form is either virtuosi or the Anglicisation, virtuosos, and the feminine forms are virtuosa and virtuose. - Ballade No. 1 in D flat major , S.170 , is a solo piano piece by the Hungarian composer Franz Liszt , composed between 1845 and 1848 . In the original edition it contained the title '' Le Chant Du Croise '' or '' The Chant of the Crusader '' . A typical performance of the piece lasts about 7 to 8 minutes . - An author is narrowly defined as the originator of any written work and can thus also be described as a writer (with any distinction primarily being an implication that an author is a writer of one or more major works, such as books or plays). More broadly defined, an author is "the person who originated or gave existence to anything" and whose authorship determines responsibility for what was created. The more specific phrase published author refers to an author (especially but not necessarily of books) whose work has been independently accepted for publication by a reputable publisher , versus a self-publishing author or an unpublished one . - A composer (Latin "compn"; literally "one who puts together") is a person who creates or writes music, which can be vocal music (for a singer or choir), instrumental music (e.g., for solo piano, string quartet, wind quintet or orchestra) or music which combines both instruments and voices (e.g., opera or art song, which is a singer accompanied by a pianist). The core meaning of the term refers to individuals who have contributed to the tradition of Western classical music through creation of works expressed in written musical notation (e.g., sheet music scores). - A pianist is an individual musician who plays the piano. Most forms of Western music can make use of the piano. Consequently, pianists have a wide variety of repertoire and styles to choose from, including traditionally classical music, Jazz, blues and all sorts of popular music, including rock music. Most pianists can, to a certain extent, play other keyboard-related instruments such as the synthesizer, harpsichord, celesta and the organ and keyboard. Perhaps the greatest pianist of all time was Franz Liszt, whose piano mastery was described by Anton Rubinstein: "In comparison with Liszt, all other pianists are children". - Franz Liszt (born Franz Joseph Liszt) (in modern usage "Liszt Ferenc", ; October 22, 1811July 31, 1886) was a prolific 19th-century Hungarian composer, virtuoso pianist, conductor, music teacher, arranger, organist, philanthropist, author, nationalist and a Franciscan tertiary. After reading the paragraphs above, we are interested in knowing the entity with which 'ballade no. 1 ' exhibits the relationship of 'instance of'. Find the answer from the choices below. Choices: - classical music - collector - composition - field - fine - hungarian - instrument - music - musical - musician - october - opera - person - publisher - publishing - quartet - rock music - skill - song - string - synthesizer - term - variety - virtue - wind - work
A:
work