Since you missed the given options, I will just provide the answer directly.
When a sentence is in the active voice, this means that the subject becomes the direct doer of the action. So, for the sentence to become active, it should be stated like this: They sung the newly composed songs. Hope this helps.
Proper Noun: A name used for an individual person, place, or organization, spelled with initial capital letters, e.g.,Larry, Mexico, and Boston Red Sox.
Give page numbers in the book from witch these are found.