Vehicle horn England, developed a standard electric car horn in 1910. Car horns are usually electric, driven by a flat circular steel diaphragm that has an electromagnet acting on it in one direction and a spring pulling in the opposite direction. The diaphragm is attached to contact points that repeatedly interrupt the current to that electromagnet causing the diaphragm to spring back the other way, which complete the circuit again. This arrangement opens and closes the circuit hundreds of times per second which creates a loud noise like a buzzer or electric bell, which sound enters a horn to be amplified. There
Alarm Will Sound museum includes a performance entitled "The Permanent Collection," a concert of integral works for the sinfonietta; "All Steve Reich," featuring the NY premiere of Radio Rewrite; "Twinned," a collaboration with John Heginbotham, a Brooklyn-based choreographer who worked with Mark Morris; and "I Was Here I Was I," an opera with music by Kate Soper, and libretto by Nigel Maister, performed in and around the Temple of Dendur. The ensemble performed with Björk in March, 2015 at Carnegie Hall to kick-off her world tour for her album "Vulnicura". In 2014 Alarm Will Sound kicked off Alarm System a program that brings