Gustav Leonhardt (1928-2012) was a Dutch keyboardist, conductor, and musicologist, renowned for his pioneering work in the field of early music performance. He specialized in the harpsichord, organ, and fortepiano, and was a leading figure in the early music revival movement of the 20th century, which sought to perform music from the Renaissance and Baroque periods on period instruments. Notable works include his recordings of J.S. Bach's keyboard music, as well as his interpretations of composers such as Heinrich Schütz, Georg Philipp Telemann, and Antonio Vivaldi. His performances and recordings with ensembles like the Leonhardt-Consort significantly contributed to the understanding and appreciation of historically informed performance practices. Leonhardt's impact on music extended beyond his performances; he was an influential teacher and mentor to many musicians, helping to shape the next generation of early music specialists. His dedication to authenticity and scholarly research has left a lasting legacy in the world of classical music, making him a pivotal figure in the resurgence of interest in Baroque and Renaissance music.