altered major chords
An altered chord is a chord containing one (or several) altered notes that don't belong to the diatonic scale. These notes are the b5 (flat fifth), #5 (sharp fifth), b9 (flat ninth), #9 (sharp ninth). In other words, altered chords are diatonic chords where the fifth and/or the ninth have been lowered or raised by one semitone.
In this guitar lesson we will see that they can be grouped into three disctinct families that are (major, minor and dominant) and also how to play them on guitar.