Claim: George Antheil was an American Avant-garde composer which pushes the boundaries of what is accepted as the norm or the status quo, primarily in the cultural realm.
Evidence: George Antheil (/ˈæntaɪl/; July 8, 1900 – February 12, 1959) was an American avant-garde composer, pianist, author, and inventor whose modernist musical compositions explored the modern sounds – musical, industrial, and mechanical – of the early 20th century. The avant-garde pushes the boundaries of what is accepted as the norm or the status quo, primarily in the cultural realm.