Original sentence: Chopin was also involved in the composition of Liszt's Hexaméron; Chopin's was the sixth (and last) variation on Bellini's theme.Examples include the concert on March 23, 1833, in which Chopin, Liszt, and Hiller in a performance of Johann Sebastian Bach's concerto for three harpsichords, and, on March 3, 1838, when Chopin, Chopin's pupil Adolphe Gutman, Charles-Valentin Alkan, and  Alkan's teacher Pierre Joseph Zimmerman performed Alkan's arrangement, for eight hands, of Beethoven's 7th symphony.The list of the programs' participants provides an idea of the richness of Parisian artistic life during this period
Edited sentence: Chopin was also involved in the composition of Hexaméron (1837) — Chopin's was the sixth (last) variation on Bellini's theme.The programs provide some idea of the richness of Parisian artistic life during this period, such as the concert on March 23, 1833, in which Chopin, Liszt and Hiller played the solo parts in a performance of Johann Sebastian Bach's concerto for three harpsichords; and the concert on March 3, 1838, when Chopin, Chopin's pupil Adolphe Gutman, Alkan, and  Alkan's teacher Pierre Joseph Zimmerman played Alkan's 8-hand arrangement of Beethoven's 7th symphony