CREATE TABLE table_204_354 (id DECIMAL, "opus" TEXT, "title" TEXT, "genre" TEXT, "sub\\u00addivisions" TEXT, "libretto" TEXT, "composition" TEXT, "premiere date" TEXT, "place ,  theatre" TEXT)

what was the first opera composed in the 1900s ?
SELECT "title" FROM table_204_354 WHERE "composition" >= 1900 ORDER BY "composition" LIMIT 1
SELECT "title" FROM "table_204_354" WHERE "composition" >= 1900 ORDER BY "composition" NULLS FIRST LIMIT 1