One of the most popular jazz chord substitution is the tritone substitution sometimes referred to as the dominant chord substitution. The most used is to replace the V with a dominant 7th chord whose root is a tritone below. Example with G7 (V), it can be replaced by Db7 a tritone (Three whole-steps) away. 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.
If the most common tritone substitution involves two dominant chords, there are other chords that can be substituted as the vi chord, the ii chord, and the iii chord. You can substitute any chord which has its roots the flat fifth of the original chord. The type of chord used depends on the melody and the desired harmony. The tritone substitution can also change qualities from the chord it is substituting. Provided that the melody indicates no strong preferences for chord type. For example, dom7 chords can be played in place of minors. This could be subject of another lesson. Meanwhile this article is focused on dominant seventh tritone substitutions.
You surely know what are major chords, minor chords, seventh chords and diminished 7th chords ? But you may be wondering what half-diminished chords are ? In music, the most encountered chords are major and minor chords. These are the basis of the Harmony. Seventh chords (m7, Maj7 and dom7) are also widely used, particularly in jazz and blues music. When a guitar student start to take an interest in jazz, he can sometimes find chords with a little barbaric names such as diminished 7th chords, augmented or even half-diminished chords (m7b5). This article will explain you what are m7b5 chords, how to play them on the guitar and how to apply them in common harmonic contexts as major and minor II-V-I progressions.
An interval is the distance between two notes, each one is represented by a number (1,2,3,4,5,6,7...) and a prefix related to its quality ("M" for major, m for minor, "P" for perfect, "d" for diminished and "A" for augmented). There are 5 different qualities. An interval can be melodic, when the tones are successive (played one after the other) and harmonic, if the notes are stacked (played simultaneously). Knowing the name of each interval is very important for any musician, they are essential elements of music theory. Intervals are very useful to understand how chords and scales are built. This article shows you how to make the difference between them.
To enrich and modernize the harmonization of a piece it is common to use fourth chords. They can replace some original chords to bring more melodic freedom into improvisation and more tension in harmony. Since the late 1950s, harmony in fourths has played a very important role in the development of modern jazz. Musicians and composers have used a lot the quartal harmony. Among them, the great American pianist McCoy Tyner, who is a master in the art of playing quartal chords. Mike Stern, Herbie Hancock, Chick Corea, Bill Evans and Kurt Rosewinkel have also used this technique. In this lesson we will see how to build chords in fourths, how to harmonize the major scale with and how to use them in comping.
The II-V-I sequence is the most common chord progression used in jazz music but also in a whole number of styles of music as pop, rock, blues, country. This theoretical element is a must know for any guitarist who wants to learn the jazz language because. It is present in a large number of jazz standards (Summertime, Autumn leaves, Blue bossa, All the things you are and many more). The mastery of this harmonic cadence will open up many perspectives in your guitar practice, whether in composition, in improvisation or more in the practical and theoretical learning of your instrument. Notice that this post is focused on major II-V-I cadence.
One of the fundamental theoretical elements to understand music is the harmonization of the major scale. Harmonizing scale is building chords with notes. For this, you have to stack thirds (It is also possible to harmonize the major scale in fourths). If you are wondering why thirds and not seconds or sixths for example, the reason is mainly historical: our music today is based on harmony in thirds. Once you have read this lesson, you will be able to find the tonality of a song simply by looking at its chords, you will know which scale to play on which chord progressions.
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