Composer Don Music was a Muppet character on the children's television show Sesame Street. He was performed and voiced by Richard Hunt.

The typically amusing sketch would have him become frustrated by his inability to think of the final line to well known songs such as "Twinkle Twinkle Little Star" and "Mary Had a Little Lamb", and react by banging his head on his piano. However, a reporter observing him, Kermit the Frog, would then help Don by suggesting some suitable lyrics. As a result, Don would be inspired to suddenly come up with a whole alternative lyrical composition to the familiar children's songs, which he immediately plays with a full arrangement without any rehearsal with a line of backup singers that suddenly appear from the next room.

Don Music debuted in 1974. After reports that children were imitating him by banging their heads against things, Don was dropped from the show.

Don kept a picture of Sesame Street songwriter and composer Joe Raposo on the wall (although it was never actually identified as such), as well as a bust of Ludwig van Beethoven (possibly a reference to Schroeder) on his piano, which he addressed as "Ludwig" when apologizing for his failure as a composer or otherwise verbalizing his feelings. In at least one episode the bust is of William Shakespeare, which he addressed as "Bill."

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Music is an art form whose medium is sound and silence. Its common elements are pitch (which governs melody and harmony), rhythm (and its associated concepts tempo, meter, and articulation), dynamics, and the sonic qualities of timbre and texture. The word derives from Greek μουσική (mousike; "art of the Muses").

The creation, performance, significance, and even the definition of music vary according to culture and social context. Music ranges from strictly organized compositions (and their recreation in performance), through improvisational music to aleatoric forms. Music can be divided into genres and subgenres, although the dividing lines and relationships between music genres are often subtle, sometimes open to individual interpretation, and occasionally controversial. Within "the arts", music may be classified as a performing art, a fine art, and auditory art. There is also a strong connection between music and mathematics.

To many people in many cultures, music is an important part of their way of life. Ancient Greek and Indian philosophers defined music as tones ordered horizontally as melodies and vertically as harmonies. Common sayings such as "the harmony of the spheres" and "it is music to my ears" point to the notion that music is often ordered and pleasant to listen to. However, 20th-century composer John Cage thought that any sound can be music, saying, for example, "There is no noise, only sound." Musicologist Jean-Jacques Nattiez summarizes the relativist, post-modern viewpoint: "The border between music and noise is always culturally defined—which implies that, even within a single society, this border does not always pass through the same place; in short, there is rarely a consensus ... By all accounts there is no single and intercultural universal concept defining what music might be."

Don Diablo (born February 27, 1980 as Don Pepijn Schipper) is a Dutch record producer, songwriter, artist, DJ. His parents named him after Don van Vliet (Captain Beefheart).

Don Diablo is an Amsterdam-based dj/producer, who produces his own music, does remixes and production work for other artists, (co)directs his own musicvideos and travels around the globe to do DJ-gigs. After signing his first record deal at age fifteen, Don Diablo has had the opportunity to grow as a producer as well as an artist. His music is a blend of musical styles varying from electro to dubstep and from downtempo electronica to drum & bass. At the end of 2005, Don Diablo founded his own record label and event brand, Sellout Sessions, and started fine-tuning his own sound and raising his profile in his native country, the Netherlands. Success followed soon after with (underground) hits like "Blow," "Who's Your Daddy", "Pain Is Temporary, Pride Is Forever", "Hooligans" and "Animale". "Blow" was the first single to be rolled out internationally and got licensed to over ten territories after creating quite a buzz in the club scene.

Demetria Devonne "Demi" Lovato (born August 20, 1992) is an American singer-songwriter, musician, and actress. Her earliest roles included Angela on Barney & Friends, before she became better known for her starring roles in the Camp Rock movies, as Sonny Munroe in the Disney sitcom Sonny with a Chance, and as the star of the 2009 movie Princess Protection Program. She is also involved in philanthropic activities through charity work and various social and environmental causes.

As a solo musical artist, Lovato released her debut album Don't Forget on September 23, 2008. The album debuted at number two on the Billboard 200 selling 89,000 copies in the first week. It has since shipped over 500,000 copies, earning a gold certification in the United States. Lovato released her second album, Here We Go Again, on July 21, 2009. The album debuted at number one on the Billboard 200, selling 108,000 copies in the first week. Her third studio album, Unbroken, was released on September 20, 2011 and peaked at number four on the Billboard 200. She is working on her fourth studio album.