Who were the two Post-Romantic composers?

Two prominent Post-Romantic composers are Gustav Mahler and Richard Strauss. Mahler is known for his symphonies that blend orchestral innovation with deep emotional and philosophical themes, while Strauss is celebrated for his operas and tone poems that showcase lush orchestration and complex harmonies. Both composers expanded the boundaries of musical expression in the late 19th and early 20th centuries. Their works reflect the transition from Romanticism to modernism, incorporating new techniques and ideas.