 
<translate> Nye ụfọdụ iyi nke nsụhọ na mgbe ahụ azịza ya. Schubert nwụrụ mgbe ọ dị afọ iri atọ na otu, ma ọ rụpụtara ọtụtụ ihe n'oge ndụ ya. Ihe o mepụtara nwere ihe karịrị 600 ọrụ olu ụwa (ọkachasị Lieder), symphonies zuru ezu asaa, egwu dị nsọ, opera, egwu egwu na nnukwu ụlọ na egwu piano.  Zaa ajụjụ a: Olee ụdị abụ Schubert bụ ọkachamara na ya? <eng> Give some stream of consciousness and then the answer. Schubert died at age 31, but was extremely prolific during his lifetime. His output consists of over 600 secular vocal works (mainly Lieder), seven complete symphonies, sacred music, operas, incidental music and a large body of chamber and piano music.

Answer this question: what type of song did schubert specialize in? 