On this film four classical cases in adults of congenital, and valvular heart disease are presented, and their physical signs demonstrated. They are: patent ductus arteriosus; atrial septal defect; severe aortic regurgitation; and mixed aortic and mitral valve disease. Each case presentation is followed by a brief relevant discussion. This and the succeeding film together provide an excellent introduction to the diagnosis of such cardiac disorders, with the sounds well recorded.