This Element investigates the balance and interaction of imagination (visions) and technique (decisions) in the composition of music and includes current scientific research on dreams, the hypnagogic state, emotions, and feelings. It also includes thoughts of composers past and present, and examines how works start from visions in a range of music, comparing musical ideas and techniques to models in other creative disciplines. The Element elucidates aspects of musical discourse by imagining how Haydn, Mozart, and other composers would order falafel for takeout. This unorthodox approach emphasizes parallels between music and theater that are central to this Element.