...by the way.. do you know who made the Bolero ( the dance ) popular ?
But if you would ask who made the bolero music popular, there are actually differing answers around:
A salsero who only knows that fusion-style bolero-son will answer Ignacio Pineiro.
Following wikipedia it is Miguel Falíde, and asking me, of course Pepe Sanchez.
When Falíde created the danzón, the genre bolero cubano already was mature. You can read everywhere that Falíde incorporated the bolero into the danza. But I do not follow this view. Falíde only slowered down the danza puertoriqueña to the habanera tempo, changed the instrumentation, and added a third part that later developed into the mambo. And the dancing style changed: While the danza francesa still was a choreographed contra and square dance, the danza puertoriqueña already was a travelling dance. The danzón finally was improvized on the spot, what surely made it popular.
Finally. Do you remember that I wrote in the chachachá thread that guajira stems from Tenerife? Now I want to add that bolero stems from Mallorca. And to our american friends: either island is a very popular european holiday resort and also famous for the squabbling between english and german guys for beach chair resources. See you!