This project to trace Beethoven's Sonata from No. 1 has recorded No. 12. Actually, regarding this fourth title, privately I include the music that gave special feelings to me. It is the music that I recorded the sound source of this artist for the first time in my own studio, it was played many times in the international competition of the past several years and it was "11th" which was especially important in his recent repertoire. In truth, at the time of recording this music, I should have paid special attention. However, I have prepared and released the most hurriedly among the titles I have ever had. Privately I regret writing this release note that I have become "one sheet that I could not afford the most" in the titles so far. On the other hand, as we recorded this music that was played in various scenes so far, we also need to make this work a benchmark of the performance we've heard over and over. Therfore I had always thought about making the contents properly. Now, I could record it unexpectedly quickly. I am very relieved that the music that disappeared many times in my mind disappeared, something consistent with private ideals was recorded. In particular, I will report to you that we have confidence in letting listen you the fighting in his international competition over the past few years. Acknowledgments In making this work, we are deeply grateful to YAMAHA artist service Tokyo for coorporation for recording. Our deepest appreciation goes to our concert tuner, Mr. Mizutani, who gave us special help and advice in order to make wonderful sounds. Moreover, without friends who have worked with to complete this project, we couldn't release this CD, we would like to thank you all who work with us.