This document provides an overview of cardiac auscultation. It discusses the history of auscultation and the stethoscope. It describes the areas of auscultation on the chest and features of heart sounds such as location, character, and timing. The normal cardiac cycle and sounds S1, S2, S3, and S4 are explained. Additional heart sounds like clicks, opening snaps, and pericardial knocks are covered. Murmurs are defined and systolic and diastolic murmurs are described. The grading of murmurs and the radiation of murmurs is also summarized.