Original sentence: In 1836, it was arranged as a piano quartet and, two years later, the solo piano work known today.The Andante spianato (spianato means "even or smooth") for solo piano was composed as an introduction to the polonaise after Chopin received a long-awaited invitation to perform in one of Habeneck’s Conservatoire Concerts in Paris.The polonaise opens in fanfare and moves into an ebullient dance form.The serene middle section (in G major) is not a trio, but only a contrasting episode to complement the overall texture of the movement
Edited sentence: Chopin’s unexpected and brief excursions, the many electric shocks of surprise and alarm, and the sheer poetic gusto with which he approached these materials was astonishing and, for years, unequalled.In 1836 it was arranged as a piano quartet and, two years later, the solo piano work known today.It moves into the ebullient and fearless dance form of which he was such a master.Many today hold that the polonaise may be one of the most famous and brilliant of its kind.Not being a trio, it is not in C major but remains in G major.The Andante spianato (spianato means "even, or smooth") for solo piano was composed as an introduction to the polonaise after Chopin received a long-awaited invitation to perform in one of Habeneck’s Conservatoire Concerts in Paris.The polonaise opens in fanfare.The very serene middle section is not a trio, but only a contrasting episode to complement the overall texture of the movement