CREATE TABLE table_2460 ("#" FLOAT, "Japanese title" CLOB, "R\\u014dmaji" CLOB, "Japanese translation" CLOB, "Vocalist" CLOB, "Episodes used" CLOB)

When momoiro clover z is the vocalist how many japanese titles are there?
SELECT COUNT("Japanese title") FROM table_2460 WHERE "Vocalist" = 'Momoiro Clover Z'
SELECT COUNT("Japanese title") FROM "table_2460" WHERE "Vocalist" = 'Momoiro Clover Z'