The tuning boards of a Gibson Harp Guitar, (Circa 1800) is seen on display as part of a new exhibition from the National Guitar Museum "Guitar: The Instrument That Rocked The World" at the Liberty Science Center in Jersey City, New Jersey, October 3, 2014. With as many as 16 strings, the Harp Guitar evolved from various attempts in Europe and Great Britain to combine the best features of both instruments. The exhibition, which runs from October 4 through January 4, 2015, explores facets of the world's most popular instrument from its history as an instrument of popular culture over the past 400 years to the science of creating sound with wood, steel and other materials. REUTERS/Mike Segar (UNITED STATES - Tags: SOCIETY) 

A Gibson Harp Guitar, (Circa 1920) is seen on display as part of a new exhibition from the National Guitar Museum "Guitar: The Instrument That Rocked The World" at the Liberty Science Center in Jersey City, New Jersey, October 3, 2014. With as many as 16 strings, the Harp Guitar evolved from various attempts in Europe and Great Britain to combine the best features of both instruments. The exhibition, which runs from October 4 through January 4, 2015, explores facets of the world's most popular instrument from its history as an instrument of popular culture over the past 400 years to the science of creating sound with wood, steel and other materials. REUTERS/Mike Segar (UNITED STATES - Tags: SOCIETY) 

A traditional Mexican mariachi band performs in front of a large TV screen at the International Monetary Fund (IMF) headquarters, as Mexican Finance Minister Jose Antonio Meade speaks during a news conference in Washington, April 20, 2012. Mexico holds the rotating presidency of the G20 group of developed and emerging economies and Meade became the G20 chair in December. REUTERS/Yuri Gripas (UNITED STATES - Tags: POLITICS BUSINESS)