A silent disco or silent rave is an event where people dance to music listened to on wireless headphones. Rather than using a speaker system, music is broadcast via a radio transmitter with the signal being picked up by wireless headphone receivers worn by the participants. Those without the headphones hear no music, giving the effect of a room full of people dancing to nothing.
In the earliest days of silent discos, before 2005, there would be only one channel available to listen to music through. Over time, the technology moved along to where there were two, and later technology allowed for a third channel that three separate DJs could broadcast over at the same time.
Silent discos are popular at music festivals as they allow dancing to continue past noise curfews. Similar events are "mobile clubbing" gatherings, where a group of people dance to the music on their personal music players.
An early reference in fiction is the 1969 Finnish science-fiction film Ruusujen Aika (A Time of Roses), where characters wear headsets during a party.
The concept was used by eco-activists in the early 1990s, utilizing headphones at outdoor parties to minimize noise pollution and disturbance to the local wildlife.
In 1994, the Glastonbury Festival linked its on-site radio station to the video screen sited next to the Main Stage, allowing festival goers to watch late night World Cup football and music videos on the giant screen after the sound curfew by using their own portable radios. The idea was the brainchild of the project manager from Proquip, who supplied the giant screen, and engineers from Moles Recording Studio in Bath, Somerset, who were working with Radio Avalon.
In May 2002 artist Meg Duguid hosted Dance with me... a silent dance party at the Museum of Contemporary Art Chicago where she created an outdoor club installation complete with velvet ropes and glow rope in which a DJ spun a transmission to wireless headsets that audience members put on and danced to.  Duguid threw a second dance party at the Museum of Contemporary Art, Chicago the following year, entitled Dueling DJs where two DJS simultaneously spun two separate musical transmissions various wireless headsets that audience members put on and danced to. This performance was repeated the following year (2004) at the Chicago Cultural Center.
The term "silent disco" has been in existence since at least 2005 with Bonnaroo Music Festival advertising such an event that year with DJ’s Motion Potion, Quickie Mart and DJ medi4 and headphones provided by KOSS.
HUSHconcerts (previously, Silent Frisco) was the first company to produce a multi-city Silent Disco tour in 2008 with Silent Soundclash  kicking off at Winter Music Conference in Miami, followed by Atlanta, Athens, Savannah, Wilmington NC, Charlottesville Va, Baltimore, New York City, Syracuse, Pittsburgh and St. Louis. During this tour, the company became the first to produce American silent discos on a beach (Miami Beach) and a boat (the Rocksoff Cruise in New York Harbor).
The Oxford Dictionary Online added the term "silent disco" to their website in February 2011. As interest has increased, there has been a rise in the number of companies organizing parties and providing events with wireless headphones. Some companies have offered home kits.
Another type of silent party, known as mobile clubbing, involves the gathering of a group of people in an unconventional location to dance to music which they provide themselves via a portable music device, such as an MP3 player, listened to on headphones. These flash mob gatherings may involve hundreds of people, transforming public spaces into temporary clubbing areas, in which dancers listen to their personal playlists. To an observer it would appear that the participants are dancing for no apparent reason. Mobile clubbing events are organized using mass-emails, word-of-mouth or social networking websites such as Facebook, or a combination of these methods.
The first event, organised by London-based artists Ben Cummins (also founder of Pillow Fight Club) and Emma Davis, was at London's Liverpool Street Station in September 2003. Over the next five months there were a further five events at other London train stations including Waterloo, Charing Cross and London Bridge. By the end of 2008 there had been more than twenty of these events at similar venues throughout London, mostly train station concourses or other public spaces that lend themselves to expressive dancing and rapid dispersal.
A headphone concert is a live music performance where the audience, in the same venue as the performing artist, listens to the music through headphones. The idea originated in 1997 when Erik Minkkinen, an electronic artist from Paris, streamed a live concert from his closet over the internet to three listeners in Japan. The concept led to a decentralized organization known as le placard ("the Cupboard"), which allowed anybody to establish a streaming or listening room.
The first headphone concert taking place in front of a live audience took place March 20, 1999, at the South by Southwest festival in Austin, Texas. The American psychedelic band The Flaming Lips used an FM signal generator at the venue and handed out mini FM radio receivers and headphones to each member of the audience. A normal speaker system was also used so the sound could also be felt. This continued on their "International Music Against Brain Degeneration Revue" tour with mixed results, with technical problems including dead batteries and intoxicated audience members having trouble tuning to the correct frequency. Another headphone concert was performed in the Chapter Arts Centre, Cardiff in April 2000 by Rocketgoldstar.
Later headphone concerts used specially designed wireless 3-channel headphones, better in-house custom made transmitters and no speakers or any live PA in the venue. Major events hosting headphone concerts included the 2005 Glastonbury Festival, 2010 Shift Festival in Switzerland, the 2011-12 Van's Warp Tours across North America, Sensoria 2012 in Sheffield, UK, the 2012 Bonnaroo Music Festival in Tennessee and the Hoxeyville Music Fest in Michigan. In 2012, Kid Koala performed a "Space Cadet Headphone Concert tour" around the world.
A variant of the headphone concert involves live bands competing for the audience, who are able to choose which band's frequency to receive. In August 2008, the first silent Battle of the Bands was held at The Barfly music venue in Cardiff. The event featured bands going directly head-to-head, with a stage at each end of the venue, allowing gig-goers to choose which group they wished to listen to.
Theatre and performance companies are now beginning to exploit silent disco technology as well. In 2009, with the help of SilentArena Ltd, Feral Productions began using an experimental approach – a mixture of narrative-led performance, sound art and guided exhibit. Their first performance, The Gingerbread House, took the audience from The Courtyard, Hereford on a journey through a multi-storey car park in the centre of Hereford. In 2010, their second show, Locked (Rapunzel’s Lament), took place in a children’s playground, also in Hereford. Silent theatre techniques are now being used by companies in Liverpool, Birmingham and Glasgow.
In 2015 Lincoln Center staged a production of the Rocky Horror Picture Show utilizing Quiet Events Headphones, where an audience wearing headphones could switch between the audio for the live performance and the soundtrack of the film version being projected behind it.
Silent street shows
Street performers have used the concept as a solution to overcome bans on amplification and loudspeakers on the street. In 2016, Irish band Until April began using this for their shows on the street while touring in Germany and Switzerland.
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