NEW YORK—Although he works long hours for less than seven figures a year, entertainment lawyer Jude Mortison said knowing that he is "one of the good guys" makes it all worth it. "I might not be one of those big fancy city-courthouse types, but I do my part," said Mortison, who tracks down song lyrics used in published works without proper permission and secures the requisite legal and penalty fees for music publishers. Mortison, who bills $800 an hour, added that the look of satisfaction on the face of Warner Brothers executives is all the additional payment he needs.