In Aaron Copland’s “How We Listen” Copland addresses the “three planes of listening,” sensory, expressive, and musical. Copland digresses onto the topic of the sensuous plane and described it as, “the simplest way of listening to music.” So then, wouldn’t every initial earful of any song be filed under the plane of “sensory”? Mindlessly tuning in, but consciously checking to see if the pros outweigh the cons, so that one can determine whether or not it’s worth another listen. He then projects onto the “expressive plane” and explains that individuals attempt to tie the known, to music. Any self-proclaimed lover of music has wondered to themselves at least once, why their heartbeat speeds while listening to a certain song or portion of a melody.