After attending the University of Oklahoma, she studied opera in Italy and California, but the Broadway songs sung by Barbara Cook led her in a different musical direction.
A virtuoso at multiple styles of musical comedy who has refined a hundred variations of the double take, Ms. Sullivan can turn on a dime and deliver a formal rendition of "Dancing in the Dark" in which her luscious middle and lower registers supply serious drama.
[8][9] She also appeared in the New York City productions A... My Name Is Alice in 1984 and 1992 and Splendora in 1995, and performed in the Musicals Tonight concert presentations of So Long, 174th Street and By the Beautiful Sea in 1999 and Fifty Million Frenchmen in 2006.
In the West End, Sullivan appeared in Vienna to Weimar in 2004 and has performed in revues celebrating the songs of Noël Coward and Irving Berlin.
Sullivan has recorded albums with Nadler, including Always: The Love Story of Irving Berlin, A Fine Romance: A Dorothy Fields Songbook (2006) and A Swell Party: Cole Porter (2007).