Jennifer Holliday has been played on NTS shows including The Opera Show, with Oh Happy Day first played on 26 December 2017.

Jennifer Holliday (born Jennifer-Yvette Holliday on October 19, 1960 in Riverside, Texas) is an American singer and actress. Her career started on Broadway in musicals, but eventually she became a successful recording artist. Her biggest hit to date is the R&B/Pop hit "And I'm Telling You I'm Not Going".

Holliday landed her first big role on Broadway in 1980, when she landed her first notable role in the Broadway production of Your Arms Too Short To Box With God. Her performance in that musical earned her a 1981 Drama Desk nomination. Her next role was the role for which she is best known: the role of Effie Melody White in the Broadway musical Dreamgirls. Holliday joined the show in December 1981 and remained with the show for nearly four years. Her performance in the role was widely acclaimed, particularly in her iconic performance of the musical number that ends Act I, "And I Am Telling You I'm Not Going".

Among the acclaim was Holliday's sweep of awards in 1982, including the Tony Award for Best Leading Actress in a Musical, a Grammy award for her recorded version of the song, and Drama Desk and Theater World awards for the performance. Holliday also performed in the touring company of "Sing, Mahalia, Sing" in 1986.