"Sir Duke" is a song composed and performed by Stevie Wonder, from his 1976 album Songs in the Key of Life. Released as a single in 1977, the track topped the U.S. Billboard Hot 100 and Black Singles charts, and reached #2 in the UK Singles Chart, his joint biggest hit there at the time.

The song was written in tribute to Duke Ellington, the influential jazz legend who had died in 1974. The lyrics also refer to Count Basie, Glenn Miller, Louis Armstrong and Ella Fitzgerald.

The artists, apart from Stevie Wonder, who perform on the original version were: Raymond Pounds (drums), Nathan Watts (bass), Mike Sembello (lead guitar), Ben Bridges (rhythm guitar), Hank Redd (alto saxophone), Trevor Laurence (tenor saxophone), Raymond Maldonado (trumpet), and Steve Madaio (trumpet).

Wonder re-recorded the song for the 1995 live album Natural Wonder.

Wonder wrote the song as a tribute to Duke Ellington, a jazz pianist who had an influence on him as a musician. Wonder had already experienced the passing of two of his idols (Dinah Washington and Wes Montgomery) after attempting to collaborate with them.

Stevland Hardaway Morris (born May 13, 1950 as Stevland Hardaway Judkins), known by his stage name Stevie Wonder, is an American singer, songwriter, and multi-instrumentalist, a child prodigy who developed into one of the most creative musical figures of the late 20th century. Blind since shortly after birth, Wonder signed with Motown's Tamla label at the age of eleven, and continues to perform and record for Motown to this day.

Among Wonder's best known works are singles such as "Superstition", "Sir Duke", "I Wish" and "I Just Called to Say I Love You". Well known albums also include Talking Book, Innervisions and Songs in the Key of Life. He has recorded more than thirty U.S. top ten hits and received twenty-two Grammy Awards, the most ever awarded to a male solo artist. Wonder is also noted for his work as an activist for political causes, including his 1980 campaign to make Martin Luther King, Jr.'s birthday a holiday in the United States. In 2009, Wonder was named a United Nations Messenger of Peace. In 2008, Billboard magazine released a list of the Hot 100 All-Time Top Artists to celebrate the US singles chart's fiftieth anniversary, with Wonder at number five.

Seongha Jeong (정성하) (colloquially: Sungha Jung) (born 2 September 1996) is a South Korean professional acoustic finger-style guitarist who has risen to fame on YouTube and other sites. As of 2012, his channel had over 17 million views, with his videos getting a total of over 454 million views, and also over 726,000 subscribers.

Seongha typically takes three days to learn and practice a new piece, and video-record it for upload onto YouTube. His genre selection is rather broad, as he learns and plays many pieces that are playable on guitar, therefore consequently spread across numerous genres.

Seongha has won 13 awards on YouTube, including 6 "#1" awards. Also on YouTube, Seongha has 523 videos with over one million views. Seongha's video with the most views is the one which shows him playing the theme from "Pirates Of The Caribbean".

In 2010, he was featured on Narsha's solo album "Narsha" for the song "I'm in Love" Seongha has composed 18 pieces as of February 2011, two of which are featured in his debut album, "Perfect Blue". He released his second album, "Irony", on 21 September 2011.

Nathan Harrell East (born December 8, 1955, in Philadelphia, Pennsylvania) is a jazz, R&B and rock bass player and vocalist. East holds a Bachelor of Arts degree in Music from the University of California, San Diego (1978). He is a member of smooth jazz quartet Fourplay and has recorded, performed and co-written songs with performers such as Eric Clapton, Joe Satriani, Phil Collins, Stevie Wonder, Toto and Herbie Hancock.

Born to Thomas and Gwendolyn East, he is one of eight children (five boys and three girls) raised in San Diego, California, where the family moved when he was four. East first studied cello in seventh through ninth grades and played in local Horace Mann junior high school's orchestra. At age fourteen he developed an interest in the bass guitar, playing in church (Christ The King) for folk masses with his brothers Raymond and David. He was active in his (Crawford) high school's music programs along with a local top 40 band called "Power". He has said his early influences included Charles Mingus, Ray Brown and Ron Carter on upright bass; and James Jamerson, Paul McCartney and Chuck Rainey on electric bass. He studied music at UC San Diego. Nathan East is an accomplished amateur magician.

Hunter Easton Hayes (born September 9, 1991) is an American country music singer and songwriter. He is signed to Atlantic Records Nashville, which released his debut single "Storm Warning" on May 16, 2011. His self titled album was released on October 11, 2011.

Hayes was born on September 9, 1991 in Breaux Bridge, Louisiana to Lynette and Leo Hayes. He began his musical career at age two when his grandmother gave him a toy accordion. At age four, he began making appearances at local performances and on national television, including showings on Maury, Rosie O'Donnell, and Nickelodeon's series Figure It Out. At the age of 13, Hayes appeared on "America's Most Talented Kids," a show hosted by Dave Coulier. He performed the hit Hank Williams song, "Hey Good Lookin'."

In 2008, he moved from his hometown of Breaux Bridge, Louisiana to Nashville, Tennessee to be signed with Universal Music Publishing Group as a songwriter. He graduated in 2007, at the age of 16, and in 2010, co-wrote "Play" for the Rascal Flatts album Nothing Like This. In September 2010, Hayes was signed to Atlantic Records Nashville and released his debut single "Storm Warning" on May 16, 2011. It was the first single from his debut album, on which Hayes played every instrument and co-produced with Dann Huff. Matt Bjorke of Roughstock gave the single three stars out of five, praising the lyrics and comparing Hayes' voice favorably to Rascal Flatts' lead singer Gary LeVox, with whom Hayes toured from January to February 2012 on the Rascal Flatts "Thaw Out" tour. Hayes' debut, self-titled album, Hunter Hayes was released on October 11, 2011.