Is low harmony in minor scale?

Harmony is any two (or more) notes played over the top of one another. The most common types of harmony are played with the 1st and 3rd, 1st and 5th, or 1st and 7th notes of the scale. A different sound, mood and tone colour is created with each interval according to which scale it comes from.

The harmony that is created between the 1st and 3rd notes of a major scale is very different to that of a minor scale, seeing as the 3rd note of any scale is almost always the most prominent one in defining it's mood. In a major scale, these two notes played together will sound pleasant and fulfilled, in a minor scale, these two notes will sound unhappy and sometimes incomplete.

The interval of the 1st and 5th note will always sound powerful and enforcing, with the exception of diminished and augmented scales, which have a similar dissonant sound. The interval of the 1st and 7th notes will always create suspense (again with the exception of diminished and augmented scales) and are hence a key characteristic in film music (they are also used a lot in Jazz and Funk styles).

These three intervals are the most commonly used as the listener can engage with these sounds, but this does not mean harmony is limited to these intervals. Again, any two (or more) notes from any scale can be used to do this.

The technique of creating harmony in music is used over almost every genre of music and hence differs accordingly.