Improvisation in music is very old, however it has become very popular with the culture of jazz and blues in the Western Hemisphere. In other areas they are implicit in their music, for example in India, the Ragas are improvised, there is a sound and a spiritual motive and that's why they are torn ...
In Venezuela, in the world of musicians in my country, it is popular to say when you are going to improvise or "download" in a group the phrase "Arranca en Fa" ...
Here is another video from the series "THE ART OF IMPROVISATION", recorded at my home in Caracas, Venezuela.
Happy day