Etude Op. 849 No. 21 is a purchasable stage and is the part of Crazy Songs Album in Piano Tiles 2. May be the second fastest of them, and the starting speed is around 7.67 tiles per sec! Retrieved from "https://piano-tiles.fandom.com/wiki/Etude_Op._849_No._21?oldid=17758" Categories: Infobox Number Mismatch Infobox PrevStage Update Needed Infobox NextStage Update Needed Unlocked by Purchase One of the hardest songs in the game Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.