Theodore Case Sound Test: Gus Visser and his Singing Duck, also known as Gus Visser and His Singing Duck, is a 1925 American short musical comedy film starring vaudeville performer Gus Visser.
Theodore Case Sound Test: Gus Visser and his Singing Duck, juga dikenal sebagai Gus Visser and His Singing Duck, adalah sebuah film komedi musikal pendek Amerika tahun 1925 yang dibintangi oleh pementas vaudeville Gus Visser.