Maurice Ravel - Hélène Grimaud
Here is a complete performance (twenty-four minutes) of Maurice Ravel's tremendously popular Piano Concerto in G major, performed by the highly acclaimed French pianist Hélène Grimaud. The second movement, the Adagio assai, begins at about 9'30" and continues for ten minutes. This movement ends with a prolonged trill that causes the house to fall silent, as the artist shows off her enviable mastery of the obedient keys.
Below, a vintage photo from 1928 of Ravel at the piano. His friend and fellow composer George Gershwin is standing at the far right. Ravel's music contains jazz influences, as well as oriental, impressionistic and modern overtones. However, a strong classical tradition predominates creating intelligent works of coherent beauty. He is best known (unfortunately, some say) for the Bolero.
Those interested can read more about Ravel (1875-1937), one of the twentieth century's greatest composers, at Wikipedia (in English).