Modern classical music is music written in the 20th century and beyond. Although much of it draws heavily on earlier forms, modern composers also experimented with rejection of long-held ideas; notably, Arnold Schoenberg questioned the traditional notions of harmony with his twelve-tone system[?], and John Cage questioned the very definition of music with his use of chance and found sounds.
... France withdrew in favour of the 100% French Avions de Combat Expérimentaux (ACX) project (which later became the Dassault Rafale).
The remaining members agreed to spli ...