CREATE TABLE table_16542 ("Year" FLOAT, "Title" TEXT, "Format" TEXT, "Studio" TEXT, "Release Date" TEXT, "Copyright Information" TEXT, "Catalog Number" TEXT)

where catalog number is 81258 , what are all the studio ?
SELECT "Studio" FROM table_16542 WHERE "Catalog Number" = '81258'
SELECT "Studio" FROM "table_16542" WHERE "Catalog Number" = '81258'