| http://www.w3.org/ns/prov#value | - purpose of practice for playing a musical instrument such as a piano, so that a user as a student can play a player piano or the like, while watching an image being reproduced and displayed and/or listening to reproduced tones of the performance information, and performance information (data conforming to MIDI (Musical Instruments Digital Interface) standards) corresponding to the user's performa
|
