George Antheil was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 avant-garde

Avant-garde

Avant-garde means "advance guard" or "vanguard". The adjective form is used in English to refer to people or works that are experimental or innovative, particularly with respect to art, culture, and politics....

 composer

Composer

A composer is a person who creates music, either by musical notation or oral tradition, for interpretation and performance, or through direct manipulation of sonic material through electronic media...

, pianist

Pianist

A pianist is a musician who plays the piano. A professional pianist can perform solo pieces, play with an ensemble or orchestra, or accompany one or more singers, solo instrumentalists, or other performers.-Choice of genres:...

, author

Author

An author is broadly defined as "the person who originates or gives existence to anything" and that authorship determines responsibility for what is created. Narrowly defined, an author is the originator of any written work.-Legal significance:...

 and inventor. A self-described "Bad Boy of Music", his modernist compositions amazed and appalled listeners in Europe and the US during the 1920s with their cacophonous celebration of mechanical devices.

Returning permanently to the US in the 1930s, he turned to writing film scores in Hollywood and his various compositions for the concert hall, ballet, and films became more tonal.