Her pupils included several prominent opera singers, actors, and entertainers, including sopranos Renée Fleming, Renata Tebaldi, Anna Moffo, tenor Anthony Dean Griffey, and actors Madeline Kahn, Kevin Kline, Constance Towers, and Juilliard voice professor Cynthia Hoffmann among others.
Music critic Anthony Tommasini wrote that "Johnson was particularly valued by students for a keen ability to find individual solutions to their problems.
Shortly thereafter she moved to New York where she began studies in piano with Andre Kostelanetz, and was soon active as an accompanist for singers and ensembles in NYC.
[1] One of her notable pupils was actor Kevin Kline who began studying with her to prepare his voice for the music in the 1983 film version of The Pirates of Penzance.
[4] Peck's other private students included Sarah Atereth, Ara Berberian, Blythe Danner, Mignon Dunn, Tammy Grimes, Madeline Kahn, Evelyn Lear, Thomas Paul, Rita Shane, Renata Tebaldi, Constance Towers, Giorgio Tozzi, and Theodor Uppman.
[4] She was hired to assist President Lyndon B. Johnson in his post-operative recovery from the surgical removal of vocal fold nodules while he was in office.
[2] Some of her pupils became celebrated voice teachers and accompanists in their own right, including Shane, Robert White (tenor), Margot Garrett, Ken Noda, Cynthia Hoffmann, Martile Rowland, and Brian Zeger.