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 John Adams, John Luther Adams, Tyondai Braxton, David Lang, Anthony Gatto, Cenk Ergün, Aaron Jay Kernis, Michael Gordon, Scott Johnson, Augusta Read Thomas, Stefan Freund, John Orfe, Caleb Burhans, Dennis Desantis and Wolfgang Rihm. From 2004 to 2007, they were musical artists-in-residence at Dickinson College. ASCAP recognized Alarm Will Sound with its Concert Music Award in 2006 for "the virtuosity, passion and commitment with which they perform and champion the repertory for the 21st century." Alarm Will Sound's 2005 album "Acoustica" (released July 2005 on Cantaloupe Music) features acoustic arrangements of music by Aphex Twin. Its first two recordings were