A lot of times commentators will discuss how the skaters practice- whether they do partial or full runthroughs, and all of a sudden I wondered about partial runthroughs. When skaters do partial runthroughs, do they do it to the music? For example, if all they're working on that moment is the footwork, is the footwork music played? Or do they practice without any music at all, or the music of their program, or any music that happens to be playing at the rink at that time? I assume with full runthroughs they skate to the music. But what happens with the partial runthroughs?