Simplify the following text for a Grade 10 native English-speaking person.
Original: Their work added to that of the Florentine Camerata of the previous decade , which produced the first experiments in monody , the solo song style over continuo bass which eventually developed into recitative and aria .
Simplified: In music they started to write `` monody '' , which meant a solo song with a continuo bass accompaniment . They soon started to realize that just monody on its own could become boring , so they developed it into recitative ( where the story could be told ) and aria ( where the singers could express their feelings in song ) .