reharmonise

/riːˈhɑːrmənaɪz/
verb
  1. To change the harmony of a piece of music, especially by adding new chords or altering existing ones.
    • The composer decided to reharmonise the chorus to make it sound more modern.
    • Jazz musicians often reharmonise standard tunes during improvisation.
    • She learned to reharmonise simple melodies in her music theory class.
Synonyms