The Essential defining rhythm of Salsa is the Son Clave. The Clave is played over an 8 beat structure in either a 3-2 or 2-3 pattern.
A basic 3-2 pattern would be played on the following beats 123 67 (although this is not strictly true as it played slightly off beat). Listen to a Salsa track and try to hear the Clave, you will notice that all the other instruments arrange their structures around it.
Clave literally translated means ‘key’. No Clave, No Salsa!
Most music is based on the 4/4 pattern including Cha Cha Cha, Merengue, R&B, RocknRoll and Blues which helped define the modern structure of most ‘popular’ music.
It is not the time structure that defines a music but the stresses and patterns of the various instruments within that structure.
Cha Cha Cha uses a 4/4 pattern and the clave, but it also uses a repeating 3 beat rhythm through the structure commonly 2&3 4&5 with the 4&5 given more emphasis.
Speed of the music also has no bearing on the style, original Cha Cha Cha was quite fast as was Mambo. Listen to the ‘King’ Tito Puente, Cuban Pete, Orquesta Aragon or Celia Cruz.
Come to La Tasca on a Saturday, we have a percussionist playing live with the music, so you can hear the individual rhythmical elements within the music.
There are many other instruments within salsa music that are emphasised more in the different styles such as the Cowbell in Cumbia, the Conga in Rumba, the Piano in the Montuno sections.
But all of them are linked by the Clave.
To sum up, you could dance the Salsa steps to any 4/4 rhythm but it wouldn’t be Salsa because the tensions and stresses wouldn’t be there that characterise the movements in the dance. Otherwise everybody would be dancing the same to every style of music.
The stresses in the music characterise the dance.
Hope this helps, if you want to know more come and ask when the music is playing, it helps to explain it better. :)
Andy Witt