I want to know the answer to the following question:
On what date did Frédéric give his first performance at the Salle Pleyel?
All the background I'm provided with is that "The critic François-Joseph Fétis wrote in the Revue et gazette musicale: "Here is a young man who ... taking no model, has found, if not a complete renewal of piano music, ... an abundance of original ideas of a kind to be found nowhere else ..."". Is that enough to answer the question?
Answer: no