Praised for her “sizeable voice that captured all of the vacillating emotions” (The New York Times), Karen Slack is “not only one of the nation’s most celebrated sopranos, but a leading voice in changing and making spaces in classical music” (Trilloquy). A recipient of the 2022 Sphinx Medal of Excellence, Slack is a sought-after vocal artist, collaborator, curator and artistic advisor known for her fiery charisma and groundbreaking approach to engagement. Her debut album Beyond the Years: Unpublished Songs of Florence Price on Azica Records won a 2025 GRAMMY® Award in the category of Best Classical Solo Vocal Album.

A major milestone in Slack’s 2024-2025 season is the nationwide tour of her new commissioning project, African Queens, an evening-length vocal recital of new art songs celebrating the history and legacy of seven African queens, revered as rulers but not widely heralded in the Western world. Slack will perform the world premiere of African Queens at the Ravinia Festival, followed by performances at co-commissioners Aspen Music Festival, Tanglewood Music Festival, 92NY, Washington Performing Arts, Denver Friends of Chamber Music, and Newport Classical Festival.

In July 2024, Slack released an ambitious new recording project, Beyond the Years, in collaboration with ONEcomposer and pianist Michelle Cann on Azica Records. The album comprises the unpublished songs of Florence Price, highlighting Price’s affinity with themes of faith, nature, love and loss, accompanied by long-overdue published editions of Price’s music.

During the 2023-2024 season, Slack made her solo debut with the New York Philharmonic, performing Beethoven’s Ah, Perfido! at David Geffen Hall, and debuted as a guest artist with Chamber Music Detroit, where she gave masterclasses and headlined two programs: performing as a soloist in Of Thee I Sing, curated by Slack as a call for racial justice and an appeal to the healing power of love, and appearing alongside the Pacifica Quartet in works by Beethoven, Price, and James Lee III – whose featured work, A Double Standard, was commissioned for Slack and the Quartet by Carnegie Hall, Chamber Music Detroit, and Shriver Concert Series. In conjunction with Sparks and Wiry Cries, she performed in two productions of Songs in Flight, composer Shawn Okpebholo’s program exploring the stories of enslaved people who fled captivity, and she returned to the Dallas Symphony Orchestra for selections from the Great American Songbook.

During the 2022-2023 season, Slack debuted with The Dallas Opera as Freia in Das Rheingold, and performed in the world premiere of Shawn Okpebholo’s Songs in Flight alongside singer and multi-instrumentalist Rhiannon Giddens at The Metropolitan Museum of Art and The Kimmel Center. She also appeared in two separate world premieres by Hannibal Lokumbe, performing as a soloist with the Nashville Symphony (The Jonah People) and Oklahoma City Philharmonic (Trials, Tears, Transcendence: The Journey of Clara Luper). She premiered Jasmine Barnes’ Songs of Paul, a tribute to Paul Robeson, with Orpheus Chamber Orchestra and was featured soloist in the premiere of Damien Geter’s Justice Symphony with the Fresno Symphony and The Washington Chorus. Slack made her Houston Grand Opera debut in the world premiere of Joel Thompson and Andrea Davis Pinkney’s A Snowy Day and, in January 2022, was appointed Creative Partner with Brooklyn’s National Sawdust. Slack debuted the role of Billie in the 2019 world premiere of Terence Blanchard’s Fire Shut Up in My Bones and made her film debut portraying the Opera Diva in Tyler Perry’s movie and soundtrack For Colored Girls. In addition, she has performed on the stages of the Metropolitan Opera, Lyric Opera of Chicago, Washington National Opera, Scottish Opera, San Francisco Opera, Opera Theatre of St. Louis, Austin Opera, New Orleans Opera, Minnesota Opera, Vancouver Opera, Edmonton Opera, Sacramento Opera, Opera Philadelphia, Madison Opera, and Arizona Opera, among others.

When the pandemic limited live performances during the 2020-2021 season, Slack made premiere digital performances with Houston Grand Opera, Madison Opera, and Minnesota Opera. She also starred in a new production of the opera Driving While Black, presented by UrbanArias,and launched a digital talk show, #kikikonversations, drawing acclaim from Opera News and The New York Times. She co-created and performed in #saytheirnames – Women of the Movement, a film recital and production in partnership with Philadelphia’s Lyric Fest, performed in recital for Opera Philadelphia. Appearing alongside actor/narrator Liev Schreiber, she was featured in Orpheus Chamber Orchestra’s Speaking Truth to Power program, hosted by livestream platform Idagio.

Throughout her career, Slack has performed Beethoven’s 9th Symphony, Mahler’s 2nd Symphony, Strauss’s Vier Letzte Lieder, and the Verdi Requiem with various orchestras throughout the United States. She was featured in her first performances of Chausson’s Poème de l’amour et la mer with the Omaha Symphony in collaboration with Opera Omaha. Abroad, she has appeared with the Melbourne Symphony, Sydney Symphony and Bergen Philharmonic Orchestras, as well as with the St. Petersburg Philharmonic in celebration of the 80th birthday of conductor Yuri Temirkanov. Slack made her Carnegie Hall debut as Agnes Sorel in Tchaikovsky’s Maid of Orleans with the Orchestra of St. Luke’s. She performed as a soloist with the Philadelphia Orchestra in the world premiere of Hannibal Lokumbe’s Healing Tones with conductor Yannick Nézet-Séguin and the Union Symphony Orchestra for Wagner’s Wesendonk Lieder.

Over recent seasons, Slack has amassed a body of work reflecting her dedication to premiering works by living composers, with particular focus on using her platform to elevate works by Black artists. Slack is an Artistic Advisor for Portland Opera, serves on the board of the American Composers Orchestra and Astral Artists, and holds a faculty position at the Banff Centre for Arts and Creativity in Alberta, Canada. She has been named Lyric Unlimited Artist-in-Residence at Lyric Opera of Chicago for the 2024-2025 season, as well as Artist-in-Residence at leading entrepreneurial institution Babson College.

A native Philadelphian, Slack is a graduate of the prestigious Curtis Institute of Music, as well as the Adler Fellowship and the Merola Opera Program at the San Francisco Opera. She is the winner of numerous competitions and awards - most notably the Montserrat Caballé International Competition, Metropolitan Opera National Council Auditions, George London Foundation Award, Marian Anderson ICON Award, Licia Albanese-Puccini Foundation, Rosa Ponselle International Vocal Competition, Portland Opera Lieber Award, Liederkranz Foundation Award and the Jose Iturbi International Competition for Voice.