Well Fionn, you could look at it like this too. You're not really singing, and what you "sing" does not come from your heart. A heart is a muscular organ that has no ability whatsoever to produce emotion. Your brain is an organ of which tiny neurons are firing rapidly and constantly, having more "feeling" when a song is memorized means nothing more except that neurons are firing differently. "Love" is just a mixture of chemicals and nerves. "Singing" is just a column of air vibration the cartilage in your vocal cords. Come to think of it, "music" is just a bunch of sonic vibrations. All depends on how you look at it.