Chords;
- consist of at least 3 notes
- are built on every other letter

CHORD BUILDING BLOCKS

A  C  E
B  D  F
C  E  G
D  F  A
E  G  B
F  A  C
G  B  D

TRIADS (3 note chord -  Root/3rd/5th)

SEVENTH CHORDS (4 note chord -  Root/3rd/5th/7th)