MAMBO   

A Conversation with GOD
Mambo is a Latin dance of Cuban origin that corresponds to Mambo music. Arsenio Rodriguez invented
Mambo in 1942.  Although many think that Cachao came up with it, they are dead wrong. 
Arsenio Rodriguez (El Siego Maravilloso) came up with the rhythm in a section of a song.  Back in those days they played many rhythms in one number of music.  Rhythms like Montuno, Son Montuno, Guajira, Danzon, and yes, even Mambo

Not to take anything away from Cachao, but it’s important to have the facts.  What Cachao did was just as important.  He had the great idea to stretch out the Mambo and take out all the other rhythms.  He popularized Mambo.

In the late 1940s, a musician named Perez Prado (el rey de el mambo) came up with the dance for the mambo music. So they say