PERSON@1 -LRB- c. NUMBER@1 NUMBER@2 October NUMBER@3 -RRB- was an MISC@1 composer and organist , regarded as the most important MISC@1 composer of his era .

PERSON@1 -LRB- born about NUMBER@1 -- died NUMBER@2 October , NUMBER@3 -RRB- was the most important MISC@1 composer of his time .
