Born in America, Martha Graham studied from the mid-1910s to 1923 at the Denishawn School of Dancing and Related Arts before establishing the Martha Graham Centre of Contemporary Dance in 1926. Rejecting classical European ballet, the dancer searched in primitive societies the inspiration for her spiritual-like naturalistic moves she interpreted bare feet. With her shows, she illustrates strong emotions and her social battles, such as Chronicle, in 1936 that depicted depression and isolation or Deep Song that decried the Spanish war. Martha Graham's innovative dance had, and still has, the most long-lasting influence on contemporary performance. Deeply influenced by the political climate of her environment, the 'Picasso of dance' made her modern dance popular in a country she so strongly analysed and represented, creating a unique 'American experience'. At the end of her career, many celebrities such as Bette Davis, Ingrid Bergman and a bouncing Woody Allen, studied in her studio in order to better discover their body and move in front of the camera – eager to prove what Martha Graham claimed: 'nothing is more revealing than a movement.'