A former ballerina named Marta C. González, dancing to the music of Swan Lake in a video still from YouTube. Música para Despertar hide caption toggle caption Música para Despertar Arts & Life Struck With Memory Loss, A Dancer Remembers 'Swan Lake.' But Who Is She? November 10, 2020 Viewers worldwide are responding to a moving video of Marta C. González, a former dancer afflicted with dementia. But critics are questioning whether González is who the clip makers claim she is.