Chords are built from notes in the Major scale. The basic chord begins with the 1 3 5 notes from the Major Scale. The lowest note being the root, or the name of the chord. Altering and adding other notes from the Major Scale give the chords their personal characteristics. Extensions of the chord use the 7 9 11 13 and sometimes 15. There are other chords but this diagram covers a lot of bases. More than you'll need. Here are common names and notes adjusted from the Major Scale. Major Minor Diminished 7th Major 7th Minor 7th sus 9th 2nd 1   3  5 1 b3  5 1 b3 b5 1  3  5  b7 1  3  5   7 1 b3  5  b7 1  4  5 1  5  9 2  3  5 Music Lessons by Kevin Brandow www.KBCBmusic.com