PERSON@1 -LRB- , -RRB- -LRB- -- NUMBER@1 April NUMBER@2 -RRB- was a MISC@1 composer , pianist , and conductor , widely acknowledged as one of the most important and influential composers of 20th century music .

PERSON@2 -LRB- b.Oranienbaum -LRB- now Lomonosov -RRB- , June NUMBER@3 NUMBER@4 ; d. LOCATION@1 , April NUMBER@1 NUMBER@2 -RRB- was one of the most important composers of the 20th century .
