This is becoming a Zombie thread. Thanks for the additions:
A Conversation on Music; Rubinstein,Anton;
A Music Study in Germany; Fay; (Music scene of the late 1800's)
After the Golden Age: Romantic Pianism and Modern Performance; Hamilton; (19th century piano playing versus modern playing)
Alfred Brendel on Music: Collected Essays; Brendel; (Lots of interesting thoughts by a great musician)
Alkan; The Music; Smith;
Am I Too Loud?; Moore (Memoirs of an accompanist)
An Amateur at the Keyboard…; Yates (History,accompanying, public music etc)
An Equal Music; Seth;
A Practical Guide to Solo Piano Music; Barnard (Lists, Lists, and more Liszts. This covers rough levels of advanced pieces.)
Art of Performance; Schenker; (performance, technique, practicing.)
Art of Piano Playing, The; Neuhaus; (Autobiographical and advice on technique)
Art of Practicing, The; Bruser; (Suggestions for practicing with relaxation, all instruments)
Art of Practicing, The; Whitton;
Art of the Piano; Diebboll; (Beautiful pianos)
Bad Boy of Music; Antheil; (biography)
Basic Principles of Pianoforte Playing Lhevinne;
Beethoven; Solomon; (Biography)
Body and Soul; Conroy;
Broadwood by Appointment: a History; Wainwright;
Cambridge Companion to Liszt; Hamilton ed.;
Capture the Inspiration; Schmitz; (Kinesiology of piano playing)
Chopin, a New Biography; Zamoyski;
Chopin: Pianist and Teacher: As Seen by his Pupils; Eigeldinger, ed.;
The Classical Style: Haydn, Mozart, Beethoven; Rosen;
Company of Pianos; Burnett; (history of early pianos, early piano builders and firms / influence of early piano development on the output of the classical composers)
Complete Idiot's Guide to Buying a Piano; Flinn;
Conversations with Arrau; Horowitz;
Dance and the Music of J.S. Bach; Little, Jenne, Jenne; (Bach's dance music)
The Death of David Debrizzi; Micou; novel of a piano prodigy, told from the perspective of the prodigy's first teacher, full of biting wit)
Ecstacy and Tragedy of Genius Glenn Gould; Oswald; (Biography, psychological study)
Effortless Mastery; Werner;
Famous Pianists and their Technique; Gerig; (Overview of schools and approaches to technique)
Farewell Recital; Moore; (Memoirs of an accompanist)
French Pianism: A Historical Perspective; Timbrell; (Overview and interviews with French Pianists)
Furthermoore; Moore; (Memoirs of an accompanist)
Giraffes, Black Dragons and Other Pianos; Good; (A technical history from Cristofori to the modern concert grand)
Great Pianists, The; Schoenberg;
Grand Obsession; Knize; (Perri's journey to find the perfect piano)
Great Pianists on Piano Playing; Cooke; (Information and practical advice from great pianists + biographical sketches)
Guide to the Pianist's Repertoire; Hinson; (available online at
http://www.iupress.indiana.edu/iol/ Review and levels for common piano pieces. This does cover advanced pieces.)
Harold Bauer, His Book; Bauer (biography)
Improve Your Piano Playing; Meffin; (Tips)
Inner Game of Music; Green; (Techniques for mastering nerves and tension)
Interpreting Bach at the Keyboard; Badura-Sokda;
I Really Should Be Practicing; Graffman; (Autobiography)
Johann Sebastian Bach: The Learned Musician; Wolff; (Biography)
Just Being at the Piano; Chase;
Life and Liszt; Friedhelm; (Intoxicating memoir)
Life, Paint and Passion; Cassou; (Intuitive approach to creating, focus is on painting but applicable)
Listening to the Twentieth Century; Ross; (historical and musical overview of 20th century composers, music, and the music scene)
Lives and Times of the Great Composers; Steen;
Lives of the Great Composers; Schonberg;
Men, Women and Pianos; Loesser; (History of pianos)
The Mephisto Waltz; Stewart: (horror novel about dying concert pianist who befriends a younger pianist who gave up professional aspirations)
Mozart: A Life; Solomon; (Biography)
The Mozart Companion; Robbins, Landon, Mitchell;
Music at Your Fingertips; Slenczynska; (Piano advice for artist and amateur)
My Husband, Gabrilowitsch; Clemens; (biography)
My Life in Music; Barenboim; (Barenboim's experiences as a pianist and conductor. Interesting insights into the art of conducting.)
My Life with the Great Pianists; Mohr; (Personal reflections of a technician, caveat: heavy on religion).
My Many Years; Rubinstein; (Autobiography)
My Young Years; Rubinstein; (Autobiography)
Note by Note; Tunstall; (Memoirs of a piano teacher)
Notes from a Pianist's Bench; Berman; (technique, interpretation emotion)
Notes of a Pianist; Gottschalk; (Memoirs of a 19th century pianist)
On Music; Brendel;
On Piano Playing; Whiteside; (Combines "Indispensables of Piano Playing" and "Mastering the Chopin Etudes and Other Essays)
On Piano Playing; Sandor; (Practical program for developing physical skills essential to accomplished playing)
Ornamentation: A Question & Answer Manual; Lloyd-Watts, Bigler; (How to perform ornaments for intermediate pianists)
Passionate Practice; Elson; (Evolving your attitude about playing, tension, nerves and performing.)
The Perfect Wrong Note; Westney; (Advice on practice, nerves and performance. )
Pianist's Guide to Pedaling; Banowetz;
Pianists Guide to Standard Teaching and Performance Literature, The; Magrath; (Review and levels for common elementary to early advanced piano literature. Does not cover the advanced pieces.)
The Pianist's Problems; Newman;
The Pianist's Repertoire; Bailie; (graded practical guide with suggestions on study and performance)
Piano; Crombie; (Photographic history of the piano)
Piano Book; Fine; (Piano construction, purchasing, brands)
Piano Girl; Goldsby; (Amusing memoir, insights into piano playing)
Piano Handbook Complete Guide; Humphries; (Tutorial)
Piano Lessons/Music Love and True Adventures; Adams
Piano Notes; Rosen; (notes from a concert pianist)
Piano Playing with Questions Answered; Hofmann; (Great pianist's advice).
Piano Roles; Parakilas; (Social history of the piano)
The Piano Shop on the Left Bank; Carhart; (charming story)
Piano Technique; Leimer & Kieseking; (technique, memorizing)
Piano - The Making of a Steinway Concert Grand; Barron;
Pierce Piano Atlas; Ashley, Pierce; (Piano business, manufacturing, serial numbers etc)
Playing Bach on the Keyboard - A Practical Guide; Troeger;
Playing the Piano for Pleasure; Cooke; (1940's - advice on how to practice.)
Poet's Love; Moore; (Songs of Robert Schumann)
Rachmaninoff; Harrison; (Biography)
Reminiscing with Noble Sissle and Eubie Blake, Robert Kimball and William Bolcom;
Romance on Three Legs; Hafner; (Biography Glenn Gould)
Schubert Song Cycles; Moore;
Singer and Accompanist; Moore; (Interpretation of 50 songs)
Speaking of Pianists; Chasins; (Personal reflections on the great pianists of the early 20th century)
Sviatoslav Richter: Notebooks and Conversations; Monsaingeon; (catnip for Richter fans)
Temperament; Isacoff;
This is Your Brain on Music; Levitin;
Tipbook - Piano: The Best Guide of Your Instrument; Pinksterboer; (Lessons, practicing, jargon, history, etc.)
The Unashamed Accompanist; Moore; (memoirs of an accompanist)
Under the Lid; Brady; (Technician's advice on piano maintenance with fascinating anecdotes about pianists and concert prep.)
The Visible and Invisible in Pianoforte Technique; Matthay; (Matthay's famous method -complete)
What Every Pianist Needs to Know About the Body; Mark; (Alexander Technique and anatomy for pianists)
With Your Own Two Hands; Bernstein, S; (pianists practical program for conquering nervousness, sharpening memory, concentration, coordination, flexibility)
Wonders of the Piano; Bielefeldt; (How pianos are made)