CREATE TABLE table_3579 ("Title and source" TEXT, "Developer" TEXT, "Publisher" TEXT, "First released" TEXT, "Japan" TEXT, "Europe" TEXT, "North America" TEXT, "Exclusive" TEXT, "Move-only" TEXT)

How many titles/sources have a developer of Clover Studio?
SELECT COUNT("Title and source") FROM table_3579 WHERE "Developer" = 'Clover Studio'
SELECT COUNT("Title and source") FROM "table_3579" WHERE "Developer" = 'Clover Studio'