Complex sentence: There are many guslars today, more so than four decades ago, but when there were few, the sounds of the gusle played by Miro Roglic in Hamilton or Ljubo Lopicic in Montreal would bring the Serbian crowd to a contemplative silence.
Split into simpler sentences: There are many guslars today, more so than four decades ago. When there were very few, the sounds of the gusle played by Miro Roglic in Hamilton or Ljubo Lopicic in Montreal would bring the Serbian crowd to a contemplative silence.