Automatic composition apparatus and method, and storage medium

摘要

An automatic composition apparatus is provided which enables the user to compose a piece of music while taking account of the overall structure of the melody of the piece of music as a whole. A CPU generates each of a plurality of layers of skeleton that constitutes a melody of a piece of music. The plurality of layers form a hierarchical structure formed preferably of a layer of an overall skeleton, a layer of an passage skeleton based on the overall skeleton, and a phrase skeleton based on the passage skeleton. The CPU generates each layer of skeleton except the highest layer of skeleton, based on at least one of the plurality of layers of skeleton that is higher than the each layer of skeleton.