Robert Schumann's works lie at the center of German Romanticism, with an essentially lyrical style that reflects his quintessential place among the great German composers. From 1840 Schumann switched from writing, primarily, piano music and Lieder, to writing orchestral music, with the joyful First Symphony written in just four days, and the uplifting tone of the Second Symphony a remarkable triumph over depression and illness. But the effectiveness of Schumann's orchestration in his symphonies has been the cause of much debate. Gustav Mahler's re-orchestrations from the early1900s provide models of tasteful modification that are suited to the larger orchestras of today.