In Music, harmony refers to when two or more notes are heard or played at the same time and end up mixing and sounding good or pleasant. They can be any two notes that sound together but essentially different from each other. Harmony is when two different similar-sounding notes sound more pleasing to us done in isolation or in existence without the other sound. When learning to sing harmony it's important to learn how to recognize accompanying parts of music, and how you can practice it by joining a singing choir that usually singing in harmony rather than unison: Learn...