Final answer:
An Oratorio is unstaged and longer in duration, while a Cantata is staged and shorter in duration.
Explanation:
A major difference between a cantata and an oratorio is that a cantata is a composite church choir form from the Baroque period involving soloists, choir, and orchestra with several movements and shorter duration, while an oratorio is an unstaged dramatic work for solo vocalists, choir, and ensemble, often telling a story using sung text and music and lasting for a longer duration.
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