Complex sentence: Besides developing a great artistic labor in music, another subject that he felt really passionate about was writing; for many years he wrote an article about traditions and folklore of Paraguay that was named "Parrilla Luna y Folklore".
Split into simpler sentences: Besides developing a great artistic labor in music, another subject that he felt passionate about was writing. For many years he wrote a column about traditions and folklore of Paraguay called "Parrilla Luna y Folklore".