1. A musical or literary theme that develops and evolves throughout a composition, gradually becoming more complex or changing in character
The composer used a progressive theme that transformed from a simple melody into an elaborate orchestral passage.
O compositor usou um tema progressivo que se transformou de uma melodia simples em uma passagem orquestral elaborada.
2. A recurring subject or idea in art, literature, or music that advances or changes over time rather than remaining static
The progressive theme of social change runs throughout the novel, reflecting the characters' evolving perspectives.
O tema progressivo de mudança social percorre todo o romance, refletindo as perspectivas em evolução dos personagens.