Complex sentence: Pierre Clereau (died before 11 January 1570) was a French composer, choirmaster, and possibly organist of the Renaissance, active in several towns in Lorraine, including Toul and Nancy.
Split into simpler sentences: Pierre Clereau (died before 11 January 1570) was a French composer, choirmaster, and possibly organist of the Renaissance. He was active in the middle of the 16th century in several towns in Lorraine, including Toul and Nancy.