Its unique text was due in large part to the contribution of a 14-year old 
Its unique text was due in large part to the contribution of a 14-year old autistic boy, Christopher Knowles.  It is performed in four acts and five interludes, called "knee plays" because of their connective function.  Much of the time a violinist wanders between proscenium and pit, and all of the performers are dressed in short-sleeved white shirts and suspenders in this five-hour minimalist work.  FTP, name this 1976 opera by Phillip Glass.
Its unique text was due in large part to the contribution of a 14-year old autistic boy, Christopher Knowles.  
Einstein on the Beach