Question: Valarie Pettiford received a Tony nomination for the Broadway production of the musical conceived by whom?

Context articles: Glenn Slater
Body of Water (musical)
Kathryn Doby
Swing!
Olga Merediz
Fosse
Gay Men's Chorus of Los Angeles
Valarie Pettiford
John Cullum
Steven Boyer

Glenn Slater (born 1968) is an American lyricist who collaborates with Alan Menken and other musical theatre composers.
 He was nominated for the Tony Award for Best Original Score for the Broadway version of "The Little Mermaid" at the 62nd Tony Awards in 2008, his second Tony nomination for "Sister Act" at the 65th Tony Awards in 2011, and his third Tony nomination for "School of Rock" at the 70th Tony Awards in 2016.
Body of Water is a musical conceived by Tony Kienitz and Tanna Herr with music by Jim Walker (JVA).
 It entails the life of fourteen teens left behind in a civil war crisis, awaiting further signals from their parents while hiding in a secluded mountain cabin.
 The show was the inaugural production of A Theatre Near U, a theatre and film academy for teenagers in the San Francisco Bay Area.
Kathryn Doby is an American dancer, actresses, choreographer, and assistant to Bob Fosse.
 She made her Broadway debut in the ensemble of Fosse’s "Sweet Charity" in January 1966 at the Palace Theatre in Times Square.
 Aside from her performance in the musical "Gregory" (1970), Doby’s work on Broadway continued with Fosse as a Player and Dance Captain in "Pippin" (1972) and as an assistant to Mr. Fosse for "Chicago" (1975) and "Dancin’" (1978).
 Her film credits include "The Night They Raided Minsky's" - “Minsky Girl” (1968), "The Handmaid's Tale (film)" - Aunt Elizabeth (1990), and again worked with Fosse as a dancer in "Sweet Charity" (1969), "Cabaret" – Kit Kat Dancer (1972), and "All That Jazz" – Kathryn (1979).
 She also re-set the Fosse direction and choreography for the 1981 stage production of "Pippin", starring Ben Vereen, William Katt, and Chita Rivera that was filmed for TV.
 She was also slated to recreate the choreography for "Dancin" to be revived by the Roundabout Theatre Company in 2009.
 This production was postponed and, as of the date of this entry, does not have a projected start date.
 In 2012 Doby returned to New York from her home in California to restage the "Dancin’" Act One finale, “Beat Me Daddy Eight to the Bar” for the American Dance Machine for the 21st Century (ADM21).
 She was joined by original cast members Lloyd Culbreath, Valarie Pettiford, Cady Huffman, Roumel Reaux, and Candace Tovar.
Swing!
 is a musical conceived by Paul Kelly with music by various artists.
 It celebrates the music of the Swing era of jazz (1930s–1946), including many well-known tunes by artists like Duke Ellington, William "Count" Basie, Benny Goodman and others.
 It received a nomination for the 2000 Tony Award for Best Musical and other Tony awards.
Olga Merediz (born February 15, 1956) is a Cuban-born American Broadway, TV, and film actress.
 Merediz originated the role of Abuela Claudia in the Broadway musical "In the Heights", for which she received a Tony nomination for Best Performance by a Featured Actress in a Musical.
 She played the role for the show's entire Broadway run.
 Her television credits include NBC's 2016 series "Shades of Blue" and Netflix's "Orange Is the New Black".
Fosse is a three-act musical revue showcasing the choreography of Bob Fosse.
 The musical was conceived by Richard Maltby, Jr., Chet Walker, and Ann Reinking.
The Gay Men's Chorus of Los Angeles (GMCLA) has been a notable part of the Southern California performing arts community.
 Formed July 12, 1979 as a volunteer effort of 99 gay men from all over the greater Los Angeles metropolitan area, GMCLA has grown in size, gained professional artistic and administrative staff, toured nationally and internationally, released fourteen CDs, and appeared with numerous stage, film and television celebrities including Billy Porter, Lily Tomlin, Angela Lansbury, Bea Arthur, Malcolm Gets, Doris Roberts, Jerry Herman, Melissa Manchester, Mary McDonnell, Levi Kreis, Joanna Gleason, Alex Newell, Amber Riley, Charles Pierce, Miss Coco Peru, Valarie Pettiford, Jane Lanier, Randi Driscoll, Margaret Cho, Michael Jeter, Stephen Schwartz, Liz Callaway, Lance Bass, Jennifer Holliday, Tierney Sutton and LeAnn Rimes.
 The Chorus has appeared on several television broadcasts including the "85th Academy Awards", "Access Hollywood", "Will & Grace", "$#*!
 My Dad Says", "The Ren & Stimpy Show", "Mad TV", and a six-episode arc on "Six Feet Under".
Valarie Pettiford (born July 8, 1960) is an American stage and television actress, dancer, and jazz singer.
 She received a Tony nomination for her role in the broadway production "Fosse".
 She is also known for her role as "Big Dee Dee" Thorne on the UPN sitcom "Half & Half".
John Cullum (born March 2, 1930) is an American actor and singer.
 He has appeared in many stage musicals and dramas, including "On the Twentieth Century" (1978) and "Shenandoah" (1975), winning the Tony Awards for Best Leading Actor in a Musical for each.
 He earned his first Tony nomination as lead actor in a musical in 1966 for "On a Clear Day You Can See Forever" in which he introduced the title song, and more recently received Tony nominations for "Urinetown The Musical" (2002) (best actor in a musical) and as best featured actor in a musical the revival of "110 in the Shade" (2007).
Steven Boyer is an American stage and television actor, comedian, and musician.
 He is best known for originating the role of Jason/Tyrone in "Hand to God" Off-Broadway and in the Broadway production.
 This role earned him a Tony nomination for Best Leading Actor in a Play.
 He plays the role of Dwayne Reed in the NBC sitcom "Trial & Error", with John Lithgow.
 He played a minor role in Martin Scorsese's "The Wolf of Wall Street" alongside Leonardo DiCaprio.
 He has also played several small parts in television, including "The Good Wife", "Law & Order", and "Orange Is the New Black".