Williams was born on April 5, 1973, in Virginia Beach, Virginia, the oldest of three sons of Pharaoh Williams, a handyman, and his wife Carolyn, a teacher. His roots extend for generations in Virginia and North Carolina, and one of his ancestors journeyed to West Africa in 1831, prompting other relatives to emigrate from America to Liberia in 1832. He met Chad Hugo in a seventh-grade summer band camp where Williams played the keyboards and drums and Hugo played tenor saxophone. They were also both members of a marching band; Williams played the snare drum while Hugo was drum major.

On March 31, 2014, Williams was announced as a new coach for the seventh season of The Voice, replacing CeeLo Green. On May 18, 2015, Team Pharrell had 16-year-old Sawyer Fredericks win the eighth season of The Voice. In June 2014, it was announced that Williams would make a guest appearance on the docu-series Sisterhood of Hip Hop. Williams was the executive producer of Atlanta rapper T.I.'s ninth studio album, Paperwork, which was released on October 21, 2014 by Grand Hustle and Columbia Records. In May 2014, Williams curated an art show named after his album, "Girl," at the Galerie Perrotin in Paris, France. The show included 37 artists including Takashi Murakami, JR, Daniel Arsham, and Marina Abramovic among others." Comme des Garcons developed a unisex fragrance with Williams scheduled for release in late 2014. Kaws designed the bottle artwork.  In January 2015, Williams and Al Gore announced that they are teaming up to create a 7-continent "Live Earth" concert on June 18 to raise awareness about and pressure governments to act on climate change. He is the musical director. On February 8, 2015, Williams made a cameo in an episode of The Simpsons entitled "Walking Big & Tall" where he comes to Springfield to write a new anthem for the town. Williams recorded three songs for the soundtrack to the animated film The SpongeBob Movie: Sponge Out of Water. He also recorded a song "Shine" with Gwen Stefani for the Paddington movie. At the 2015 Grammy Awards Williams performed an orchestral rendition of "Happy" with composer Hans Zimmer and pianist Lang Lang that included a tribute to the Black Lives Matter "Hands Up, Don't Shoot" movement inspired by Eric Garner's death and the events in Ferguson, Missouri. In 2015, a unanimous jury determined that Williams's 2013 hit song "Blurred Lines" was an infringement of the 1977 Marvin Gaye song "Got to Give It Up". The jury awarded the Gaye family $7.4 million in damages for the copyright infringement based on profits generated.  In October 2015, the Tisch School of the Arts at New York University named Williams as their artist-in-residence. He gave the 2017 commencement address at NYU and received an honorary degree on May 17, 2017.  Also in October 2015, Williams announced that he will perform with a gospel choir on Sunday, November 1, at Emanuel AME Church in Charleston, South Carolina, where nine black parishioners were shot and killed on June 17, allegedly by a young white man who is awaiting trial. This is part of a program on race relations being produced by A+E Networks and iHeartMedia. Williams plans to speak with community leaders and others affected by the shooting, which dominated the U.S. news media for several days. The two-hour Shining a Light: A Concert for Progress on Race in America program is scheduled to air November 20, and will also feature a concert to be filmed November 18 in Los Angeles. A goal of the program is to raise money for the victims of racial violence and for organizations around the country working to promote racial equity.

Answer the following question by taking a quote from the article: who did he work with?
On May 18, 2015, Team Pharrell had 16-year-old Sawyer Fredericks win the eighth season of The Voice.