The term "first chair" is often used in the context of orchestral music, where it refers to the lead musician or principal chair of a section. However, there are several other synonymous terms that can be used to refer to this position. These include "principal chair", "lead chair", "top chair" and "first desk". In jazz and popular music, this position may be referred to as the "lead instrumentalist" or "featured performer". Additionally, in theatre productions, the role of first chair may be referred to as the "lead actor" or "leading role". Regardless of the specific term used, the first chair is a crucial role in any performance, setting the tone for the entire ensemble.