who was the performer that did last performance on 04/08/1963
CREATE TABLE "table1_19189856_1" (
  "performer" text,
  "performances" real,
  "category" text,
  "first_performance" text,
  "last_performance" text
);
SELECT "performer" FROM "table1_19189856_1" WHERE "last_performance"='04/08/1963';