Heather Headley is a Trinidadian-American singer, songwriter, record producer, and actress. She won the 2000 Tony Award for Best Actress in a Musical for the titular role of Aida. She also won the 2010 Grammy Award for Best Contemporary R&B Gospel Album for her album Audience of One. In 2018, she recurred as Gwen Garrett on the NBC medical drama television series Chicago Med. 

In 1997, she originated the role of Nala in the Broadway musical The Lion King. Headley's performance was well received, and she then originated the title role in the Broadway adaptation of Aida, earning the Tony Award for Best Actress in 2000. In 1999, she appeared in the Encores! staged concert production of Do Re Mi, with Nathan Lane, Randy Graff, and Brian Stokes Mitchell. She starred in an Actors' Fund of America benefit concert version of the musical Dreamgirls alongside Audra McDonald and Lillias White in 2001.

In the autumn of 2006, Heather performed Hal David and Burt Bacharach's song "I'll Never Fall In Love Again", from the 1968 musical Promises, Promises, for "The Kennedy Center Presents: The 2006 Mark Twain Prize", honoring playwright Neil Simon. The ceremony was later broadcast on PBS.

On July 5, 2007, Headley made a guest appearance for Andrea Bocelli's Vivere Live in Tuscany concert in Lajatico, Italy. They performed Vivo Per Lei and The Prayer. Headley sang "My Country, 'Tis of Thee" (also known as "America") with Josh Groban on January 18, 2009, during the We Are One: The Obama Inaugural Celebration at the Lincoln Memorial. On March 12, 2009, Headley sang "I Wish" on The Tonight Show with Jay Leno.

From November 2012 until August 2013, Headley played the role of Rachel Marron, in the musical adaptation of Whitney Houston's 1992 movie, The Bodyguard at London's Adelphi Theatre. She was nominated for an Olivier Award and a What's On Stage Award for this performance.

Heather joined the Andrea Bocelli UK Tour playing Glasgow Hydro on November 23 and at the Leeds First Direct Arena on November 24, 2013.

On May 10, 2016, Headley assumed the role of Shug Avery from Jennifer Hudson in the recent Broadway revival of The Color Purple, which closed on January 8, 2017 at the Bernard B. Jacobs Theatre.

From 2017, Headley is co-starring in Spike Lee's Netflix reboot of She's Gotta Have It as Dr Jamison. She also voices of the part of Fikiri as Makini's Mother in The Lion Guard.

Headley released her debut album, This Is Who I Am, in October 2002 with RCA Records. Although its first single, "He Is", was not very successful, the second single, "I Wish I Wasn't", achieved moderate success. The work on this album earned her a Grammy Award nomination for Best Female R&B Vocal Performance and for Best New Artist making her the first Tony Award winner to be nominated for this award.

Her second album, In My Mind (2006) was delayed due to the various executive shake-ups associated with RCA parent BMG's merger with Sony. Under BMG North America chairman/CEO Clive Davis for the first time, Headley released her second album In My Mind in January 2006. The title track "In My Mind" (written and produced by India.Arie collaborator Shannon Sanders) was released as the first single; and its music video was directed by Diane Martel. The song reached number-one on the U.S. Hot Dance Music/Club Play chart. The second single "Me Time" was sent to Urban AC radio only. An album track, "Am I Worth It", served to promote Headley's New March of Dimes Educational Campaign "I Want My 9 Months".

In 2009, Headley, along with Al Green, released a version of the song "People Get Ready" on the compilation album Oh Happy Day: An All-Star Music Celebration.

In January 2010 she won her first Grammy Award for Best Contemporary R&B Gospel Album for Audience of One on the EMI Gospel label.

In December 2010, Headley performed a duet version of "Blue Christmas" and "My Prayer" with Italian tenor Andrea Bocelli on his "My Christmas" tour in 5 US cities. At the Prudential Center in Newark, NJ, on December 4, 2010, the audience insisted on a second encore with Bocelli. Bocelli had to summon the detail to go and bring her back on stage.

Headley released her album Only One in the World on September 25, 2012, with the lead single "A Little While".

In September 2013, Headley appeared on America's Got Talent with Il Divo and sang "Can You Feel the Love Tonight?" from The Lion King. She also appeared with Il Divo on Broadway for a limited concert run in 2013.

In 2017, Headley began appearing in recurring roles on the TV series She's Gotta Have It. The following year, she began appearing as Gwen Garrett in a recurring role on the TV series Chicago Med.

In 2019, Headley was cast as one of the three leads in the Netflix series Sweet Magnolias.

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