In order to harmonize chord melody, you need to understand how chords are built and how they relate to one another. Chords are built by stacking thirds, and the relationship between chords is determined by the distance between the root notes. By understanding these concepts, you can begin to harmonize chord melody by adding notes that create interesting harmony.
A guitar harmony generator is a tool that helps a musician create new guitar parts or lines based on a set of chords or a melody. The generator can create different harmony lines for different instruments, or it can create a harmony line for a single instrument.
The possibility of harmonics occurring is also present. When you play the chords G7 and D7, for example, the interval between the G and D is a minor seventh. If a chord is played with this interval, it can be played as a harmonic tone or as a melody line with it. The more you learn how to play chords and practice them, the better prepared you will be for creating harmony of any kind. In music, harmony is an important part of the sound, so practicing it can make it simple to create your own tunes.