In listening to the excerpts, Vivaldi did not have any vocals or sound effects in The Four Seasons. He did use different themes throughout and depending on which section of the music, keys were changed. However, it seems each theme (Spring, Summer, Autumn, and Winter) were each in its own key, so I believe the answer is using different themes.
Motown has owned or distributed releases from more than 45 subsidiaries in varying genres, although it is most famous for its releases in the music genres of rhythm and blues, soul, hip hop, and pop. There is no info on the similarities of the two music genres. !
