In what city were the Los Titanes band founded and is also the fourth most populous city in Columbia?
Barranquilla:  Barranquilla is the largest city and port in the northern Caribbean Coast region of Colombia, with a population of 2,370,753 as of 2011 in its metropolitan area, which makes it Colombia's fourth most populous city after Bogotá, Medellín and Cali.
i don't know