A chord progression is a succession of musical chords (with at least two notes) played one after another. Chord progression can be named harmonic progression and represent the foundation of western and traditional music.
Many jazz standards use similar chord progressions, in different keys it is very important to recognize them by ear and visually. Working and practicing basic chord sequences will make you feel more comfortable when you will need to learn jazz standards, it will more evident and easy to comp and solo.
In this lesson you will learn to recognize the 14 most important jazz chord progressions as minor and major II-V-I, the turnarounds and their variations, how to use passing diminished chords. You will find charts with roman numerals to easily transpose these harmonic progressions in different keys and some examples of comping with audio files, tabs and standard notation.
One of the most popular jazz chord substitution is the tritone substitution sometimes referred to as dominant chord substitution.
It consists in replacing a dom7 chord by another dominant 7th chord whose root is a tritone away from this initial chord. Example with G7 (V), which can be replaced by Db7 which is a tritone (three whole-steps) away from G7
Thus giving two chords that have two notes in common. The 7th of G7 (F) is the third of Db7 and the third of G7 (B) is the seventh of Db7. The inversion of the 3rds and the 7ths between the original dominant chord (V) and the substituted dominant chord (bII7) is the main feature of the tritone substitution.