A brass aerophone is a musical instrument that produces sound by sympathetic vibration of air in a tubular resonator in sympathy with the vibration of the player's lips. Brass instruments are also called labrosones, literally meaning lip-vibrated instruments.
By Robert Wilde. By 1914, the six major powers of Europe were split into two alliances, which would â with the exception of Italy â form the two warring sides in World War One. Britain, France and Russia were in the Triple Entente, while Germany, Austria-Hungary and Italy were in the Triple Alliance.
Triple Alliance. In 1879 Germany and Austria-Hungary agreed to form a Dual Alliance. This became the Triple Alliance when in 1882 it was expanded to include Italy. The three countries agreed to support each other if attacked by either France or Russia. It was renewed at five-yearly intervals. The formation of the Triple Entente in 1907 by Britain, France and Russia, reinforced the need for the alliance.