I call all piano solo music pieces at Galaxy Music Notes, "songs." Oftentimes, people say that these are not "songs" because they are instrumental and that there are no lyrics or singing in them. Well, I disagree. Every musical piece comes from (or I should say "should suppose to come from") your heart, soul, body, and your precious breath. It should be your musical voice even if there are no words. The music itself without words expresses so much, tells stories, and triggers all kinds of emotions by singing through the musical instruments. So, I'm going to continue calling them "songs."