CREATE TABLE table_66874 ("Region" TEXT, "Date" TEXT, "Label" TEXT, "Format" TEXT, "Catalog" TEXT, "Note" TEXT)

Name the catalog for alfa records and cd format
SELECT "Catalog" FROM table_66874 WHERE "Label" = 'alfa records' AND "Format" = 'cd'
SELECT "Catalog" FROM "table_66874" WHERE "Format" = 'cd' AND "Label" = 'alfa records'