CREATE TABLE table_48637 ("Title" TEXT, "Writer" TEXT, "Format" TEXT, "Company" TEXT, "release date" TEXT)

Who is the company that released the album on 2008-09-18 18 September 2008?
SELECT "Company" FROM table_48637 WHERE "release date" = '2008-09-18 18 september 2008'
SELECT "Company" FROM "table_48637" WHERE "release date" = '2008-09-18 18 september 2008'