Reharmonization is a term used commonly in music that refers to the process of changing the harmonies of a preexisting piece of music. It has played a vital role in the evolution of music by allowing for creative interpretation and musical expression. Synonyms for reharmonization include chord substitution, chord revoicing, chord alteration, and refreshment. These terms describe the same process of altering the chords and harmonies of a song to create a new version or interpretation. Reharmonization is a popular technique used by musicians to enhance musical arrangements, imbue their personal style, and keep their work modern and creative.