Scholars agree that moods are general and less intense, while emotions are relatively more specific and more intense. For an individual, an event (such as music) can determine whether the response is an emotion or a mood. If the event is greatly significant, it could cause a stronger response that characterizes emotion. On the other hand, if the event is less intense, changes are characterized only in the mood(9). However, both are subjective states, which are generally affected by music(10). The subjective states, therefore, can be understood as facts of consciousness characterized by several perceptions, and, largely, by emotions, feelings and humor. They are named states because they always last for a certain amount of time, even though this amount of time may be short, average length or long, and subjective (inner) because they refer to the lower part of the user's skin perception. Perception regards the perceptive content of awareness(11), which include, among others, temporal perceptions, emotions and moods, which can be modulated positively by music within the hospital environment(4). Because of its non-verbal character, it can cross the defensive networks that consciousness and crystallized language put up against its action, touching effective mental, corporeal, intellectual and affective points of connection(12).