An electric pipe organ in Germany is playing a song for 639 years

What is a harpsichord?

The harpsichord is the precursor to today's piano, an accompanying instrument first developed in the Early Middle Ages. Rather than struck with hammers (like a piano), the strings of a harpsichord are plucked, producing a bright, consistent tone. The instrument provided harmony in ensemble music during the Renaissance and Baroque periods and featured prominently in opera.

Type out a tone and play it back with this fun game

Compose an original piece of music from your phone or desktop with this simple, super fun interface: Just start typing, discover the various sounds associated with each key or letter, and then press play. Go back, tweak, delete, and revise to your...

A German town transforms its entire city hall into a massive Advent calendar

Gengenbach turns its 18th-century town hall into a 24-window Advent calendar attracting up to 220,000 visitors each December. Each night reveals new art, reviving winter tourism in the town.

Opera melodies from centuries ago still appear in TV and movies today

Even if you haven't witnessed an 18th century opera, you've likely heard melodies from one in modern media like “Apocalypse Now” and “Sesame Street.” Today, sports events, movies, and television feature operatic melodies even over a century after they were written.

What Stonehenge sounded like

Researchers built the first scale model of the world's best-known prehistoric stone circle, Stonehenge, to study its acoustic properties. Built approximately 5,000 years ago, the landmark in southern England has puzzled historians for centuries, but...

A Harvard radio station once dedicated 24 hours to Jandek

The enigmatic singer-songwriter plays atonal dirges that are haunting or horrible, depending on your taste. He has self-released over 120 albums but rarely performs live, preferring to conceal his true identity. In 2003, a Harvard radio station aired the "Jandek Orgy," which included his fans debating his identity, lyrics, and philosophy.

Coltrane's 'Giant Steps' pushed the limits of jazz

The saxophonist's 1960 recording features chord progressions that have become known as the "Coltrane Changes." Improvising over them is remarkably difficult and has become a rite of passage for jazz musicians.

The game’s theme was the first video game composition added to the Library of Congress

Koji Kondo’s “Ground Theme,” the opening music for “Super Mario Bros.” was added to the National Recording Registry in 2023. “Having this music preserved alongside so many other classic songs is such a great honor,” Kondo said. “It's actually a little bit difficult to believe.”

This famous painting was hung upside-down for 77 years

According to a curator at a German museum, an abstract painting by Dutch artist Piet Mondrian has been displayed upside down for seventy-seven years at a number of museums.

Audi spent over three years developing engine sounds for its electric vehicles

Unlike the sounds made by combustion engines in gas-powered vehicles, electric cars produce no motor sounds. The company's acoustics team worked with composer Rudolf Helpmier to craft an electric-inspired revving sound for its R8 e-tron supercar.

The world's longest-running science experiment aims to prove if pitch is a liquid

Having run continuously since 1927, the pitch drop experiment is designed to show that the seemingly solid derivative of tar is a liquid by watching to see it drip through a tunnel. From 1930 to 2025, the substance has only produced nine drops, such that its viscosity—resistance to flow—is about two million times more than honey.

Thousands of musicians play 'Taps' simultaneously at 3 pm on Memorial Day

Taps Across America launched in 2020 when pandemic closures canceled parades and ceremonies. Tens of thousands of musicians now participate each year, playing the 24-note bugle call from porches and lawns across the country.

Scientists keep track of time via light absorbed by cesium and strontium atoms

These absorptions happen in cycles, where one second is defined as 9,192,631,770 cycles of cesium atom radiation. Strontium atoms can be used to make clocks that do not gain or lose a second in 15 billion years.

The history and operation of SIGABA, the US counterpart of the Nazi Enigma machine

Developed by the US Army and US Navy, over 10,000 of these machines were deployed by the end of World War II to encrypt messages for the armed forces using three series of rotors. The device would continue to be used until the 1950s, while personal computers were shown to possess enough computing power to crack it by 2021.

The world's longest-burning fire

This coal fire in New South Wales, Australia, a common occurrence at coal mines, has been burning for at least 5,500 years, and shows no signs of stopping.

The containment apparatus at Chernobyl is the world's largest movable metal structure

Completed in 2016, the "New Safe Confinement" is a €1.5B megastructure—the largest movable structure ever built. It was assembled next to the damaged reactor, then rolled into place along a special track to seal the site for at least 100 years.

Ingenuity and advanced engineering have allowed trains to overcome extreme landscapes

The Jungfrau Railway utilizes electric trains powered by hydroelectric energy to ascend the Swiss Alps, while Poland's Elbląg Canal hauls ships along cable-powered tracks driven by waterwheels. Germany's Wuppertal monorail navigates bends as it glides over a river valley, and New Mexico's Holloman High-Speed Test Track can achieve speeds of Mach 8.6 for rocket sleds.

The longest official chess game lasted 269 moves and over 20 hours

In 1989, Ivan Nikolić and Goran Arsović played a marathon 269-move match in Belgrade. Lasting more than 20 hours, the game ended in a draw.

How World War I ended in 2010

Germany made its final reparations-related payment for the Great War on Oct. 3, nearly 92 years after the country’s defeat by the Allies. What took Germany so long to pay for the war?

The first compact cassette tape was introduced at IFA 1963

At IFA 1963 in Berlin, Philips introduced the compact cassette tape. This new standardized audio format replaced bulky reel-to-reel tape and would go on to dominate home recording and music listening for decades.

English mathematician Ada Lovelace wrote the first computer algorithm a century before computers existed and hypothesized that computing devices would one day be able to compose music—foreseeing the generative AI systems of today.

Dickens performed 'A Christmas Carol' over 100 times

The writer began performing readings of his works in 1853 and chose 'A Christmas Carol' for the inaugural event. In the 16 years that followed, he performed it over 100 times, using different voices for his characters and consistently revising the text for the stage.

The Baghdad battery shows no evidence of use as a battery

The 2,000-year-old clay jar held an iron rod inside a copper cylinder and could have generated electricity if filled with an available electrolyte, such as grape juice. Before the jar was looted during the US invasion of Iraq, preventing further study, experts suggested it most likely housed scrolls.

Clipse made history as the first hip-hop group to perform at the Vatican

The September 2025 performance was a part of the Vatican's "Grace of the World" concert, organized by Pharrell Williams. The duo performed their song "The Birds Don't Sing," accompanied by John Legend, the Voices of Fire choir, and a live orchestra.

John Dingell Jr. was the longest-serving member of the House

John Dingell Jr. served 59 years in the United States House of Representatives, representing his Michigan constituents. This list highlights the 33 House members in US history who have served 40 years or longer.

What is pumpernickel bread?

Pumpernickel is a dark rye bread made without wheat flour in Germany and exported to over 100 countries. It's one of the oldest breads in the world, having been made for at least 500 years. It's traditionally consumed alongside something hearty like meat. It lasts for years in a tin, and some recipes require it to be baked for up to 24 hours in its own steam.

A century of Billboard issues documenting the evolution of popular music.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

One disco producer saw 'Star Wars' four times on its opening weekend and was so inspired that he recorded the album 'Star Wars and Other Intergalactic Funk,' which produced a chart-topping single.

Fish populations in the Great Barrier Reef have increased after installing waterproof speakers on the ocean floor that played recordings of sounds from healthy coral reefs.

70 years ago today, city officials in Santa Cruz, California, banned rock 'n' roll to protect its youth from corruption after witnessing a 'provocative' concert the night before.

In 1963, a basement renovation in Turkey revealed a passageway to a hidden, multilevel underground city that once housed as many as 20,000 people

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

A pickleball's loud 'pop' sound can reach 120 decibels, which is equivalent to a hammer hitting a nail

In preparation for this weekend's Eurovision finale, which is something like the World Cup of pop music, here's a young Céline Dion performing (for Switzerland?) at the 1988 competition.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

Scientists can determine Earth's past climate conditions by analyzing air trapped in microscopic bubbles within ice cores—columns of compressed snow layers that build up over hundreds of thousands of years.

Double world record holder Hunter Ewen helped conquer his fear of balloons, called globophobia, by training to win Guinness World Record titles for balloon inflation.

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

According to the physics of black holes, our 4D reality may be a hologram—a projection of information coded on a 2D surface on the edge of the universe.

Planarian flatworms are small, aquatic worms with exceptional regenerative capabilities. When cut, the worms can regenerate multiple bodies in a matter of weeks.

Pure water does not conduct electricity because this flow of energy requires the movement of charged particles, and water is a neutral molecule.

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.