CREATE TABLE table_70557 ("Catalog #" CLOB, "Title" CLOB, "Year" CLOB, "Composer" CLOB, "Released" FLOAT)

What CD has a catalog # of PCR 502?
SELECT "Title" FROM table_70557 WHERE "Catalog #" = 'pcr 502'
SELECT "Title" FROM "table_70557" WHERE "Catalog #" = 'pcr 502'