Hija del violinista Joseph Slenczynski que la obligó a tocar el piano desde los tres años.

A los cuatro inició sus estudios en Europa con Artur Schnabel, Egon Petri, Alfred Cortot, Josef Hofmann y Serguéi Rajmáninov.

A los seis debutó en Berlín y a los siete en París, convirtiéndose en famosa niña prodigio. A los 15 se retiró debido al estrés emocional.

Slenczynska fue aceptada en la University of California, Berkeley donde conoció a su futuro esposo, George Born. Se casaron en 1944 divorciándose una década después.

Regresó a su carrera con gran éxito y volvió a casarse en 1967.

En 1957 publicó sus memorias Forbidden Childhood y Music at Your Fingertips: Aspects of Pianoforte Technique.

A los 99 años su carrera prosigue con presentaciones internacionales.^[1]​

• Beversluis, John. "Ruth Slenczynska in Concert." American Record Guide, Jul/Aug 1999, Vol. 62, Issue n. 4, p 255.
• Hyde, Carol Shannon. "A Case Study of an Artist-in-Residence: Ruth Slenczynska, Concert Pianist." Dissertation Abstracts International Section A, Aug 1989, Vol. 50, page 293.
• Mach, Elyse. "Practice Notes." Clavier, Oct 2002, Vol. 41, Issue n. 8, pp 46-49.
• Muschalek, Clare. "Great Pianists Can Teach." Music Journal, Feb 1973, Vol. 311, pp 16-19.
• Nilsen, Richard. "Piano Prodigy Ruth Slenczynska Now a Legend at 87", Arizona Republic News, Jan 24, 2013.
• Rabinowitz, Peter. "I Never Look Back: A Conversation with Ruth Slenczynska." Fanfare, Jan/Feb 1999, Vol. 22, p 86.
• Rabinowitz, Peter. "Doing it Yourself: a Conversation with Ruth Slenczynska." Fanfare, May/June 1998, Vol. 21, p 47.
• Rockwell, John. "Piano: Ruth Slenczynska." New York Times, November 16, 1984.
• Rosenstiel, Leonie. "Remembrances of Nadia Boulanger." Virtuoso, 1980, Vol. 1, Issue n. 3, pp 33-36.
• Rothchild, E. "Ruth Slenczynska: On Playing the Chopin Etudes (interviews)." Clavier, 1976, Vol. 15 Issue n. 2, pp. 14-21.
• Silverman, R. J. "The Focus Sharpens." Piano Quarterly, 1983, Vol. 31, Issue n. 122, pp. 34-35.
• Slecysnksa, Ruth. Ruth Slenczynska: Tribute to Rachmanioff, DVD, Video Artists Internation, 2007.
• Slenczynska, Ruth. Music At Your Fingertips, NY, 1961, Da Capo Press.
• Slenczynska, Ruth and Louis Biancolli. Forbidden Childhood, NY, 1957.
• Slenczynska, Ruth. "Thoughts on Memorizing."
• Slenczynska, Ruth. "Build Your Own Career." Music Journal, April 1974, Vol. 32, p. 12.
• Slenczynska, Ruth. "The Opening of the Rachmaninov Second Concerto." Clavier, 1973, Vol. 12, Issue n. 7, p 18.
• Slenczynska, Ruth. "Practice and Performance Suggestions for Rachmaninoff's Etude-Tableau, No. 2." Clavier, 1973, Vol. 12, Issue n. 7, p 29.
• Slenczynska, Ruth. "Private Lesson: On Prokofiev's Vision Fuguitive XVI." Keyboard, Feb 1986, Vol. 12, pp 36-37.
• Slenczynska, Ruth. "On Chopin's Unexpected Invitations to Dance." Piano Quarterly, 1979, Vol. 27, Issue n. 106, p 24.
• Slenczynska, Ruth. "Private Lesson: Beyond Polyrhythms: a Chopin Rubato." Keyboard, Oct 1986, Vol. 12, p 93.
• Slenczynska, Ruth. "Private Lesson: How a Pianist Works on Ear-Hand Coordination." Keyboard, Jan 1986, Vol. 12, p 112.
• Slenczynska, Ruth. "Private Lesson: Gaining Left-Hand Awareness." Keyboard, Sep 1986, Vol. 12, p 109.
• Slenczynska, Ruth. "Private Lesson: Polyrhythmical Skill, Two Against Three." Keyboard, May 1986, Vol. 12, p 27.
• Slenczynska, Ruth. "Private Lesson: Exercises for Smooth Polyrhythms: Three Against Four." Keyboard, Jan 1986, Vol. 12, pp 32-33.
• Slenczynska, Ruth. "Private Lesson: On Schumann's 'Important Event' from Kinderszehen." Keyboard, April 1986, Vol. 12, pp 32-33.
• Slenczynska, Ruth. "Grandfatherly Guidance." Clavier, 1973, Vol. 12, Issue n. 7, pp 15-16.
• Slenczynska, Ruth. "Haydn's Sonata No. 35 in A Flat." Clavier, 1972, Vol. 11, Issue n. 5, pp 18-25.
• Slenczynska, Ruth. "Follow-up on Haydn." Clavier, 1972, Vol. 11, Issue n. 7, pp 18-26.
• Slenczynska, Ruth. "Private Lesson: Performance Techniques for 'Sonata K. 239' by Scriabin." Keyboard, Dec 1985, Vol. 11, pp 24-26
• Slenczynska, Ruth. "Learning Approaches to Chopin's Prelude in C Scharp Minor, Op. 28, No. 10." Piano Quarterly, 1974, Vol. 22, Issue n. 85, pp 31-33.
• Slenczynska, Ruth. "Bach's 'Three Voiced Fugue in C Minor." Clavier, 1988, Vol. 27, Issue n. 1, pp 26-29.
• Slenczynska, Ruth. "Master Class: Rachmaninoff 'Prelude Op. 23, No. 4'" Clavier, 1979, Vol. 18, Issue n. 9, pp 20-24.
• Slenczynska, Ruth. "Good Octaves and How to Acquire Them (Includes List of Music)." Clavier, 1977, Vol. 16, Issue n. 3, pp. 37-41.
• Slenczynska, Ruth. "Learning Approaches to Chopin's Prelude in E Major, Op. 28, No. 9. Piano Quarterly, 1973, Vol. 21, Issue n. 81, pp 26-31.
• Slenczynska. Ruth. "On Chopin's Unexpected Invitations to Dance." Piano Quarterly, 1979, Vol. 27, Issue n. 106, p 24.
• Slenczynska, Ruth. "On Preparations for a Piano Competition", March 2005.
• Tsai, Sin-Hsing. "The Art of Ruth Slenczynska, Vol. 5." Clavier Companion, Nov/Dec 2010, Vol. 2 Issue n. 6, pp. 64-66.
• Tobias, Karen. "Madam Ruth." Clavier, April 2007, Vol. 46 Issue n. 4, pg. 12-39.
• Verna, Paul. "Vital Reissues." Billboard, Jan 1999, Vol. 111, Issue n. 5, pp 22-28.

• Southern Illinois University: Ruth Slenczynska
• Polonia Global Fund: Ruth Slenczynska Person of the Month 10/2004
• Ruth Slenczynska: Music Biography, Credits, and Discography: All Music