Harmony is when two or more notes are played or sung simultaneously. For example, in a C major chord, the notes are C, E, and G. These notes sound pleasing together on the piano.

To sing in harmony, the additional notes should complement the melody. Choose a vowel sound that all singers will use to sing the harmony together. The harmony notes are the ones that are not already taken by the melody. For example, if the melody is in C major and the note is C, the harmony notes could be E or G. Sing them all together, focusing on blending your voices and staying in tune with the melody.

Remember to listen carefully to the other singers and adjust your volume and tone to create a cohesive and balanced harmony. With practice and rehearsal, singing in harmony can become natural and effortless.