PERSON@1 , PERSON@2 -LRB- born NUMBER@1 March NUMBER@2 -RRB- is an MISC@1 composer of musical theatre , the elder son of organist PERSON@3 and brother of the cellist PERSON@4 .

PERSON@1 , PERSON@2 -LRB- born March NUMBER@1 , NUMBER@2 -RRB- is a very successful MISC@1 composer/songwriter of musical theatre .
