n, Li Yusa only had one question in her mind: why could she perform so well without any preparationOver the years, Li Yusa has heard quite a few niche piano pieces. She can be sure that the melodies O...hing the concert in the audience, would actually have time to memorize the lyrics. You know, this song was written by Li Chanxi for his sister, and every line of lyrics is unique. It requires Ou Yan...