Moods are taken to ‘share many properties with other emotions, especially in their physiological and motivational aspects,’ but they are ultimately taken to form a class apart. For Heidegger, moods are concrete manifestation of the existential structure of attunement that ‘discloses Dasein in its thrownness.’ Moods, as suggested, are modalities of a primary intertwining between subjectivity and world. Once we address the actuality of change in this way, however, moods’ constitution no longer appear to be self-contained. Considering moods in light of the structure that makes their changeability possible opens for a range of new and interesting questions that invite further explorations. Moods are not only structurally flexible, but they are open-ended and intrinsically interconnected to those mood possibilities that may ultimately supersede them and that in the meantime belong to their in-built potential.