Harmonic Intervals -- major 3rd

Harmonic interval -- formed by playing 2 different notes.

A chord is formed by playing 3 or more notes simultaneously.

Harmony refers to how these chords are built, and how they move from one to the other.

The notes of a chord don't have to be literally simultaneous; they can be broken in time as long as our ears group them together.

Simplest 3 note chords are: triads.

Bottom of a triad -- root note.
--the note for which the chord is named.

The other 2 notes of a triad lie respectively a 3rd and a 5th above the root.
1 3 5

Major chords appear naturally on the 1st, 4th and 5th notes of amajor scale.

I IV V -- the most common chords -- folk music, classical, rock, blues, etc.


In a lead sheet:

The chords are written on top.
Melody notes are given.
The chords are all correct but not very interesting arrangement.
Why?
Cuz there is no movement in the accompaniment. It is all plain triad block chord.
There is nothing happening rhythmically.

What can we do to make things more interesting?