question: What type of melodic , rhythmic , and harmonic changes have been made by composers but are based on the works that are monophonic and unaccompanied sacred song ?
answer: polyphonic settings have been composed
turker_answer: The type of melodic , rhythmic , and harmonic changes that have been made by composers but are based on the works that are monophonic and unaccompanied sacred song is polyphonic settings have been composed .
rule-based: Polyphonic settings have been composed have been made by composers but are based on the works that are monophonic and unaccompanied sacred song .