Complex sentence: Many traditional cumbia lovers started to search for more "authentic" numbers, and some bands obliged by setting on a square cumbia beat, and writing lyrics that delved ever deeper into themes of crime and drug abuse.
Split into simpler sentences: Many traditional cumbia lovers started to search for more "authentic" numbers. Some bands obliged by setting on a square cumbia beat, and writing lyrics that delved ever deeper into themes of crime and drug abuse.