Stevie Wonder

Stevland Hardaway Morris (born Stevland Hardaway Judkins; May 13, 1950), known by his stage name Stevie Wonder, is an American musician, singer, songwriter, record producer, and multi-instrumentalist. A child prodigy, he became one of the most creative and loved musical performers of the late 20th century. Wonder signed with Motown's Tamla label at the age of 11 and has continued to perform and record for Motown as of the early 2010s. He has been blind since shortly after birth.

Among Wonder's works are singles such as "Superstition", "Sir Duke", "You Are the Sunshine of My Life" and "I Just Called to Say I Love You"; and albums such as Talking Book, Innervisions and Songs in the Key of Life. He has recorded more than 30 U.S. top ten hits and received 25 Grammy Awards, the most ever awarded to a male solo artist, and has sold over 100 million records worldwide, making him one of the top 60 best-selling music artists. 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 2013, Billboard magazine released a list of the Billboard Hot 100 All-Time Top Artists to celebrate the US singles chart's 55th anniversary, with Wonder at number six.

Demi Lovato

Demetria Devonne "Demi" Lovato (/ˈdɛmi loʊˈvɑːtoʊ/ DEM-ee loh-VAH-toh or lə-VAH-toh) (born August 20, 1992) is an American singer, songwriter, actress and model who made her debut as a child actress in Barney & Friends. In 2008, Lovato rose to prominence in the Disney Channel television film Camp Rock and signed a recording contract with Hollywood Records. Musically, Lovato is considered a pop and pop rock. She released her debut album, Don't Forget, that September; it debuted at No. 2 on the U.S. Billboard 200 and has been certified gold by the Recording Industry Association of America (RIAA) for sales of over 530,000 copies. In 2009, Lovato received her own television series, Sonny with a Chance. Her second album, Here We Go Again, was released that July and debuted at number one on the U.S. Billboard 200, and it has been certified gold by the Recording Industry Association of America (RIAA) for sales of over 650,000 copies. Its title track became her first single to break the top 20 of the Billboard Hot 100, reaching number 15, and was certified platinum.

Ray Charles

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Raymond Charles Robinson (September 23, 1930 – June 10, 2004), professionally known as Ray Charles, was an American singer, songwriter, musician, and composer. He was sometimes referred to as "The Genius", and was also nicknamed "The High Priest of Soul".

He pioneered the genre of soul music during the 1950s by combining rhythm and blues, Gospel, and blues styles into the music he recorded for Atlantic Records. He also contributed to the racial integration of country and pop music during the 1960s with his crossover success on ABC Records, most notably with his two Modern Sounds albums. While he was with ABC, Charles became one of the first African-American musicians to be granted artistic control by a mainstream record company.

Charles was blind from the age of seven. Charles cited Nat King Cole as a primary influence, but his music was also influenced by jazz, blues, rhythm and blues, and country artists of the day, including Art Tatum, Louis Jordan, Charles Brown, and Louis Armstrong. Charles' playing reflected influences from country blues, barrelhouse, and stride piano styles. He had strong ties to Quincy Jones, who often cared for him and showed him the ropes of the "music club industry."

Johnny Cash

Johnny "J.R." Cash (February 26, 1932 – September 12, 2003) was an American singer-songwriter, guitarist, actor, and author, who was widely considered one of the most influential musicians of the 20th century and one of the best-selling music artists of all time, having sold more than 90 million records worldwide. Although primarily remembered as a country music icon, his genre-spanning songs and sound embraced rock and roll, rockabilly, blues, folk, and gospel. This crossover appeal won Cash the rare honor of multiple inductions in the Country Music, Rock and Roll and Gospel Music Halls of Fame.

Cash was known for his deep, calm bass-baritone voice, the distinctive sound of his Tennessee Three backing band, a rebelliousness coupled with an increasingly somber and humble demeanor, free prison concerts, and a trademark look, which earned him the nickname "The Man in Black". He traditionally began his concerts with the simple "Hello, I'm Johnny Cash", followed by his signature "Folsom Prison Blues".