Grande sonate: Les quatre âges (French for Grand sonata: The Four Ages) is a four movement sonata for piano by Charles-Valentin Alkan. The sonata's title refers to the subtitles given to each movement, portraying a man at the ages of 20, 30, 40, and 50. The work is dedicated to the composer's father, Alkan Morhange (who died eight years later, in 1855), and was published in 1847.