Yamaha YDP181 Digital Piano Bundle with Headphones, Music Stand, and Polishing Cloth GH features an extra key sensor capable of reproducing fast repetitive playing of a single note with perfect articulation. Variable Touch Sensitivity Via Dedicated Panel Button 50 classic piano songs are provided in the song player and as a music book, "50 Greats for the Piano." These songs can be used for background music or as learning reference. Auto power off shuts down the instrument after a period of inactivity.