The article examines the ethics of musical interpretation, focusing on the performer’s responsibility in faithfully recreating a work from the score. Drawing inspiration from conductor Daniel Barenboim’s reflections (2016), it analyzes the delicate balance between personal expression and fidelity to the work, highlighting how interpretation involves not only technical skill but also moral responsibility. This notion develops through the importance attributed to history, authenticity, and the present in interpretation. These concepts are explored in the relationship between the score and the performer, addressing the ethical challenges involved in balancing fidelity and creativity. The study of Historically Informed Performance (HIP) demonstrates how it serves as the foundation of the ethics of musical interpretation, due to its attempt to recreate the original conditions of performances. However, it is also noted that HIP embodies an overly rigid fidelity, thus requiring a more balanced approach that views musical practice as an ongoing dialogue between past and present. Finally, since the rules of musical practice are not enough for performers to interpret ethically, as they need to be internalized, the role of Aristotelian phronesis is explored as an internal guide for performers in interpretative practice. Phronesis aids the performer in mediating between past and present and in making interpretative decisions that are both ethically and musically appropriate.