Simplify the following text for a Grade 9 native English-speaking person.
Original: A parody mass is a musical setting of the mass , typically from the 16th century , that uses multiple voices of another pre-existing piece of music , such as a fragment of a motet or a secular chanson , as part of its melodic material .
Simplified: A parody mass is one that borrows musical material . The music might be borrowed from a chanson or motet , usually one by another composer .