The plié is one of the most important basic movements in classical ballet and forms the foundation for numerous other steps and sequences. This guide explains how to perform the plié at the barre in all six positions, with a focus on correct posture, external rotation of the legs, and pelvic stability. It also highlights the importance of the plié for developing strength, flexibility, and body control. The demonstrations illustrate the precision and discipline required for a clean and technically correct execution in classical ballet.