"Truly fantastic ... shows mastery with his subtle handling of subito piano and as much color as possible from his instrument."
  American Record Guide, May/June 2017
  Review of 'Beethoven: Diabelli Variations'

"Offers a spontaneous and fluid performance that ranges in expression from humorous and mercurial ... to profound and awe-inspiring."
  All Music Guide, 2017
  Review of 'Beethoven: Diabelli Variations'

"O'Conor's great pianistic gifts come through. His Haydn is focused, thoughtful, clean, transparent ... O'Conor's performance is thrilling, played to perfection."
  Fanfare Magazine, 2017
  Review of 'Haydn: Sonatas'

"This exceptional CD ... anyone who is impressed with O'Conor's Beethoven disc would do well to consider this a fitting companion and give it repeated hearings."
  All Music Guide, 2017
  Review of 'Haydn: Sonatas'

"Piano virtuosity can take a variety of forms, but one of the rarest belongs to John O'Conor ... [he] represents a vanishing tradition that favors inner expression and atmosphere over showmanship and bravura ... in technically complex passages he goes the extra measure to find the ideas behind the flurry of notes."
  Chicago Tribune

"John O'Conor must be ranked high indeed ... this was exquisite playing - lucid, poised and cool; he gave himself to the expression of this graceful music. This was a memorable concert."
  New York Times

"Impeccable technique and musicality ... it would be hard to imagine better performances."
  Sunday Times (London)

"O'Conor brought real poetry to his recital of late-period Beethoven ... incisive, even visionary projections that drove to the heart of the musical matter. O'Conor led us with a lucid touch and a keen intellect ... this artist has the kind of flawless touch that makes an audience gasp."
  Washington Post

"John O'Conor is a pianist of unbounding sensitivity, and these recordings bear witness to his beguilingly eloquent style."

"John O'Conor, who by now should be recognized as the world's premier Beethoven interpreter, gives each sonata its due, never overworking, always sensitive to expressive possibilities inherent in a melody or suggested by a larger structural scheme."
  CD Review

"It was a pleasure to hear his honest and beautiful presentation of the music - a fine opportunity to enjoy his grace, precision and utter commitment."
  Isthmus (Madison, WI)

"John O'Conor has long been viewed as one of the greatest pianists of our time, and his expressive touch has lost nothing of the perfection that first launched him to fame over 40 years ago."
  Madison Magazine