Applying Melody Morphing Method to Composition

We describe the application of a melody-morphing method based on the generative theory of tonal music to composition. The melody morphing method uses mathematical operations to generate an intermediate melody between one melody and another. Although we have been evaluating the basic performance of the method, we have not previously used it for music production. Therefore, we conducted an experiment with a musicologist who understood the melody morphing method and attempted to use it for composition. When a melody generated with the method was unnatural, the musicologist added notes to correct it. The experimental results showed that 78.5% of the notes in the composed pieces were generated with the melody morphing method, while the remaining 21.5% was added by the musicologist.