Original: In 1945 , BartÃ k composed his Piano Concerto No. 3 , a graceful and almost neo-classical work . He began work on his Viola Concerto , but had not completed the scoring at his death .
Simplified: This seemed to make him interested again in composing , and he went on to write his Piano Concerto No. 3 and began work on his Viola Concerto .