Answer:
A "piece" is a general term for a musical composition. As such, a piece can be a song, a symphony, an opera, an instrumental, whatever- it is a "piece" of music. A "song" is a self-contained piece of music, with words, intended to be sung. An aria is not a song, because it is part of a larger piece of music, an opera.
Explanation:
pakibasa ng maigi wag padalos dalos
