A harmonium is a free-standing keyboard instrument similar to a reed organ. Sound is produced by air being blown through sets of free reeds, resulting in a sound similar to that of an accordion. The air is usually supplied by bellows operated by the foot, hand, or knees.

In North America, the most common pedal-pumped free-reed keyboard instrument is known as the "American reed organ", (or "parlor organ", "pump organ", "cabinet organ", "cottage organ", etc.) and along with the earlier melodeon, is operated by a suction bellows where air is sucked through the reeds to produce the sound. A reed organ with a pressure bellows that pushes the air through the reeds is referred to as a "harmonium".

In much of Europe, the term harmonium is used to describe all pedal-pumped keyboard free-reed instruments, making no distinction whether it has a pressure or suction bellows.

In India, the term generally refers to a hand-pumped instrument.

Justin Randall Timberlake (born January 31, 1981) is an American singer, actor, and businessman. He achieved early fame when he appeared as a contestant on Star Search, and went on to star in the Disney Channel television series The New Mickey Mouse Club, where he met future bandmate JC Chasez. Timberlake became famous in the late 1990s as the lead singer and youngest member of the boy band 'N Sync, whose launch was financed by Lou Pearlman.

In 2002, he released his debut solo album, Justified, which sold more than seven million copies worldwide. The album was a commercial success, spawning the hits "Cry Me a River" and "Rock Your Body". Timberlake continued his success with his second solo album, FutureSex/LoveSounds (2006), debuting at number one on the Billboard 200 chart, and produced the US number-one hit singles "SexyBack", "My Love", and "What Goes Around... Comes Around".

Timberlake has won six Grammy Awards and four Emmy Awards. His first two albums made him one of the most commercially successful singers in the world, each selling in excess of 7 million copies. He also has an acting career, having starred in films such as The Social Network, Bad Teacher and Friends with Benefits. His other ventures include record label Tennman Records, fashion label William Rast, and the restaurants Destino and Southern Hospitality.