 It was performed by the West Bay Opera company in the San Francisco peninsula in the fall of 1990.1999
An opera called "Emperor Norton of the U.S.A.", with music by Jerome Rosen and a libretto by James Schevill, premiered in Davis, California, in 1999.2003
An opera, "I, Norton", by Gino Robair, combines free and conducted improvisation with graphical and conventional scores, and has been performed by many ensembles in North America and Europe.