Definition: Blier is a term used in the French language, specifically in the context of music. It is often associated with the use of flutes or trumpets in jazz and other musical genres that emphasize improvisation and free expression. In this sense, "blier" refers to a person who plays the flute or trumpet, which is not necessarily a traditional instrument but rather an artistic medium used by musicians for expressive purposes. This term can also be applied to someone who acts as a facilitator or mediator