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CLAVE CONCEPTS: Afro-Cuban Rhythms
In order to understand Afro-Cuban rhythms one must pursue an extensive study of the clave role and its relationship with the instruments, compositions and arrangements. For it is the clave rhythm that provides the foundation in this style of music.

There are two major clave styles in Afro-Cuban music, the son clave and the rumba clave. They are both two bar rhythms, consisting of a bar containing three notes and another containing two. These rhythms can be approached two ways.  In the 3-2 often refer to as the 'forward clave' and in the 2-3 refer to as 'reverse clave'. The choice of the direction of the clave rhythm is guided by the melody, which in turn directs all other instruments and arrangements. In many contemporary compositions such as the ones recorded by Fania All Stars, Mongo Santamaria and Ruben Blades, arrangers make use of both directions of the clave in different sections of the tunes. As far as the type of clave rhythm used, it depends on the style. Generally son clave is associated with dance styles, while rumba clave is associated with folkloric rhythms.

The following shows both styles in the 3-2 variety. You will discover that the difference lies on the fourth beat of the first bar. In the son clave its on beat 'four', while in the rumba clave its on the 'and of four'. You should practice these rhythms clapping, while tapping quarter notes with your foot that is beats 'one, two, three and four' then by tapping half notes with your foot that is beats 'one and three'.


3-2 Son Clave


3-2 Rumba Clave



In the following example you will find the origins of the clave rhythm. In Cuba the clave pattern developed from various 6/8 rhythms found in sacred and secular African music. Again practice by clapping the rhythm while tapping your foot, this time tapping dotted quarter notes that is beats 'one and four'.


6/8 clave


The following example illustrates 3-2 son clave and its relationship with two other percussion instruments; timbales and congas. First you will find the rhythm played on the cascara or shell of the small timbal for which I have marked clear points of connection, and second the basic conga rhythm known as tumbao, which features open tones on the low drum on the 'three side' of the clave.


Claves




Cascara




Congas


3-2 son clave, cascara and congas

After practicing all the examples as written you should reverse them and approached all the rhythms in the 2-3 variety.


© Alex Pertout.
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