An arrangement is a planned or organized sequence of things, events, or ideas. It can refer to the way in which different elements are placed or organized within a larger structure, such as the layout of furniture in a room or the order of notes in a piece of music. Arrangement can also refer to a mutual agreement or understanding between two parties, as in a business arrangement or personal relationship. In general, an arrangement refers to the way in which different elements are combined or coordinated to create a harmonious and functional whole.