
Noise in sport —
Watch any ski race on TV and you will hear the same dull, persistent background clanging of cowbells ringing. Marcel Hirscher's feet are pictured here next to a cowbell during the podium ceremony of the men's slalom race at the FIS Alpine Skiing World Cup in January 2012.

Must have accessory —
Over the last two decades cowbells, already steeped in Alpine history, have become a global success and Winter Olympic icon.

Until the cows come home —
Bells have been used, especially in downhill skiing, for a long time. It started in Switzerland, where in summer the cows all walk around the mountains with bells on.

European culture —
"If the Swiss are coming to an event they'll bring really big bells, a foot high or more," said California-based cowbell importer Elisabeth Halvorson.

Steady march of the cowbell —
Cycling and triathlon are increasingly the domain of the cowbell. Tennis racket manufacturers gave away branded versions at the U.S. Open. Here a fan of the Tampa Bay Rays is pictured holds up a cow bell during game one of the 2008 MLB World Series against the Philadelphia Phillies.

Viva Vuvezela? —
Go to most major sporting events in 2013 and the ambience will be provided by vast, booming speaker systems. The sound of the vuvezela at the World Cup in 2010 offered a very different soundscape.

Shake, rattle and roll —
Back in 1949, football fans in England came to matches armed with very different instruments of noise -- wooden rattles.

Cowbell production —
When a Winter Olympics is within sight, cowbells become Norwegian cowbell manufacturer Moen's hottest commodity. The company produces approximately 30,000 bells each year, but in an Olympic Year over twice as many cowbells would be churned out.

Fabric of sport —
The ting-a-ling sensation of a cowbell feels warm and traditional -- part of the very fabric of sport.

The spirit of the Olympics —
"For us, it started before the Winter Olympics in Lillehammer in 1994," said Moen Grude, chief executive of the Norwegian company. "The fans saw it as the only souvenir that let them take the spirit of the Olympics back home."

Cowbell trophy —
Cowbells have many different uses and are not just for skiing fans. Here American sprinter Carl Lewis of the USA is presented in 1997 with a huge cow-bell by promoter Andreas Brugger at the IAAF Weltklasse Grand Prix at the Letzigrund Stadium in Zurich, Switzerland.

Old school cowbell —
An Alpiner with three large cow bells, which produce that sombre rhythmic sound, at a traditional bell-swinging festival in 1955.


