Fantaisie - Impromptu is the 58th stage of Piano Tiles 2. It is unlocked when the player reaches Level 20. This song is very fast, quite long and can be very frustrating, which makes it to one of the Hardest Songs in Piano Tiles 2.
Luckily it has 4 long tiles rather than Etude de Virtuosite in E has, which in turn, only has two, otherwise it will be considered an impossible level. World record is 3391 by Andrés De La Hoz.
Despite being one of Chopin's most popular works, Chopin never published it during his lifetime, and he had instructed that none of his works should be published at all. Despite so, some of his works are still published after his death, with Julian Fontana publishing Fantaisie - Impromptu, along with 2 waltzes (Opp. 69 and 70).
Most of the notes on the left hand are changed to simple eighth-note figures in the game. It is likely that they are greatly altered to circumvent the limitations of the game regarding to tuplets.
Only the Presto section is included in the game. Moderato Cantabile, the middle section, is omitted, as well as the recapitulation. Though, the last three measures are still included.
With the sheer number of single tiles in the game, it is recommended that the player has a score of at least 8.0 tiles/sec score on either Beginner Challenge or Skilled Challenge first, or else it is very easy to fail. Strong endurance and good accuracy, as well as fast speed, makes this stage a testament on the true ability of a player. At top speed, 7.7 tiles/sec, it is one of the very few stages that require the player to navigate through hundreds of consecutive single tiles in high speed.
The speed that the player must reach before completing the stage with two crowns is 8.7 tiles/sec. For three crowns, it is 9.7 tiles/sec. The number of players that can reach this speed is very few and far between, perhaps even beyond the realm of many casual players. The player must persevere by having persistent practice for many weeks.
Independence of fingers now play a substantial role as well. Arguably, pianists, expert players and fast typists have a stronger edge when it comes to speed and accuracy. Some practice regarding to reaction speed may help significantly with good hand-eye coordination.