Posted on November 17, 2014November 17, 2014 by Tom ZicarelliHistograms of Chopin etudes How often do the keys get pressed? By joeycloud at Reddit http://i.imgur.com/ZesYNTW.jpg http://www.reddit.com/r/dataisbeautiful/comments/2m9zfr/how_often_do_piano_keys_get_pressed_in_chopins/