Vehicle horn horn. Bicycles often have a classic "bulb horn", operated by squeezing a rubber bulb attached to a metal horn. Squeezing the bulb forces air through a steel reed located in the throat of the horn, making it vibrate, producing a single note. The flaring horn matches the acoustic impedance of the reed to the open air, radiating the sound waves efficiently, making the sound louder. Other types of horns used on bicycles include battery-operated horns (sometimes even car horns on 12-volt circuits are incorporated) and small air horns powered by a small can of compressed gas. Oliver Lucas of Birmingham,
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