There are events which are unforgettable, which sink deep into our memory and alter our reality. Priceless for anyone privileged enough to witness them, they create history and constitute points of reference in the cultural space. Such events certainly include concerts which, thanks to recordings, we can relish again and again to our heart's delight. And although a recording cannot replace the illumination of that unrepeatable moment in time when everything happens 'here and now,' there is no doubt that a recording allows us to repeatedly savor what we experienced in the concert hall. These never before issued recordings of the great Martha Argerich and Mischa Maisky were made in 1992 and 1993.