Denise Theresa Restout (24 November 1915 – 9 March 2004) was a French keyboard teacher, expert on German and French Baroque performance practice for the keyboard. She was assistant, protégé, domestic partner, editor, and biographer for noted harpsichordist Wanda Landowska.
Born in Paris to Fernand and Juliette (née Frangois) Restout, she earned a Certificate of Primary Studies with honors from the public schools in Paris. She later studied drawing, geometry, history of arts, and painting at the Bazot Studios in Paris, and was admitted to the School of Applied Arts in 1928. Two years later, she received the Frist Medal of the National Conservatory of Music in 1930.
She studied piano, harmony, counterpoint, musicology, voice and organ with expert teachers, and harpsicord, along with keyboard repertoire of the 15th and 18th centuries, with Wanda Landowska, beginning in 1933. Restout worked for a time at the Pleyel Company factory in France. In 1933 she began study of the harpsichord with Landowska and the organ with Joseph Bonnet.
As a performer Restout appeared at Landowska's public master classes in France, the Netherlands and Strasbourg. Landowska, a naturalised French citizen of Polish-Jewish descent, and Restout escaped Saint-Leu-la-Forêt, France during the Nazi advance in 1940, and arrived in the United States on 7 December 1941 at Ellis Island, the day Pearl Harbor was attacked.
When Landowska died on 16 August 1959, Restout inherited her estate including her papers and collection of musical instruments. She continued to teach at the Landowska Center, their home in Lakeville, Connecticut until her death. Restout became a naturalized United States citizen in 1961. Three years later, in 1964, she published, with the assistance of Robert Hawkins of The Hotchkiss School, Landowska on Music, a collection of Landowska's writings on music, which included material from Musique ancienne which Restout translated into English from the original French, and many of the master-class notes that Restout had saved during their flight from France.
Restout was a faculty member (at large) of the now defunct Barlow School (which is now The Kildonan School) in Amenia, Dutchess County, New York, the Peabody Conservatory of Music, the Hartt School, University of Southern Mississippi, and Purchase College. Later in life, Restout was organist at Saint Mary's Roman Catholic church in Lakeville, Connecticut. She was awarded the Amicus Poloniae citation by the government of Poland. Restout died in 2004, aged 88, at St. Francis Medical Center, Hartford, Connecticut.
- Paid Notice: Deaths; Restout, Denise Theresa, nytimes.com, 21 March 2004; accessed 1 December 2015.
- "Music Notes: Some Newport Novelties"; Raymond Ericson; New York Times (1987-Current file); 8 July 1979; ProQuest Historical Newspapers The New York Times (1851-2004), pg D19
- Landowska, Wanda. Landowska on music. Collected, edited, and translated by Denise Restout, assisted by Robert Hawkins. New York, Stein and Day  pg 23
- "The Well Tempered Collection" (Connecticut Weekly Desk)(Music). Brian Wise. The New York Times (22 May 2005): pg. 12 (L)
- "The Resolute Rediscover of the Harpsichord"; Anthony Tommasini; New York Times; 10 July 1999; ProQuest Historical Newspapers The New York Times (1851-2004), pg. B15
- "An Ecstasy for Music"; Harold C. Schonberg; New York Times 1857-Current; 20 December 1964; ProQuest Historical Newspapers The New York Times (1851-2004), pg BR6
- Allen, Fredrick Lewis: "After Hours:In Order to Love...": Harpers Magazine: July 1949: pg 100: http://harpers.org/archive/1949/07/page/0102; accessed 29 September 2007.
- Landowska, Wanda. Landowska on music. Collected, edited, and translated by Denise Restout, assisted by Robert Hawkins. New York, Stein and Day , pg 20
- Wanda Landowska profile, Encyclopedia of World Biography Supplement, Vol 26. Thomson Gale, 2006. Reproduced in Biography Resource Center. Farmington Hills, Mich.: Thomson Gale (2007).
- Landowska, Wanda. Landowska on music. Collected, edited, and translated by Denise Restout, assisted by Robert Hawkins. New York, Stein and Day , pg. 21.
- "Frances Cole, Music Teacher, Dies at 45"; New York Times (1857-Current file); 26 January 1983; ProQuest Historical Newspapers The New York Times (1851-2004), pg A17
- Landowska, Wanda. Landowska on music. Collected, edited, and translated by Denise Restout, assisted by Robert Hawkins. New York, Stein and Day : Includes a new translation into English of Musique ancienne, see below.
- Recording: Wanda Landowska plays Bach; Johann Sebastian Bach (1685–1750) Wanda Landowska, harpsichord, with Denise Restout, harpsichord continuo, conducted by Eugène Bigot Recorded 1936, 1938 1947 (Pearl #169, July 23, 2002)
- "Landowska: Uncommon Visionary"/directed by Barbara Attie and Diane Pontius; producers, Barbara Attie, Diane Pontius, Janet Goldwater (1997); (VHS): sd., col. & b&w
- Landowska, Wanda. Musique ancienne; le mépris pour les anciens—la force de la sonorité—le style—l'interprétation—les virtuoses—les Mécènes et la Musique. Avec la collaboration de M. Henri Lew-Landowski. [Paris, M. Senart, 1921]
- CHAMBONNIERES, JACQUES CHAMPION DE (1601/2–1672) Oeuvres complètes. Ed. by P. Brunold & A. Tessier. Reprint of the Paris, 1925, edition. English translation & new preface by D. Restout.