CREATE TABLE table_37584 ("Date" TEXT, "Label" TEXT, "Region" TEXT, "Format" TEXT, "Catalog" TEXT)

What Label released a CD single in 1993?
SELECT "Label" FROM table_37584 WHERE "Format" = 'cd single' AND "Date" = '1993'
SELECT "Label" FROM "table_37584" WHERE "Date" = '1993' AND "Format" = 'cd single'