A defensible No. 1 because his technique and harmonic imagination became a ceiling almost no jazz pianist has surpassed.
Best evidence
Tatum remains the benchmark for jazz-piano virtuosity: a near-orchestral solo style, extreme harmonic sophistication, and technical command that later pianists still measure themselves against.
Ranks near the top because his playing and compositions rewired jazz's rhythmic and harmonic imagination.
Best evidence
Monk changed the sound of jazz piano through angular rhythm, dissonant harmony, silence, and instantly identifiable compositions that became core jazz repertoire.
Essential because most post-bop jazz pianists inherit Powell's basic grammar, even when they move beyond it.
Best evidence
Powell translated bebop's horn-like velocity and complexity to the piano, creating the right-hand line/left-hand comping model that became modern jazz piano's foundation.
Belongs in the top tier for reshaping jazz harmony and the democratic piano trio ideal.
Best evidence
Evans expanded jazz piano's harmonic palette and trio interplay, making the piano-bass-drums format more conversational and influencing generations of lyrical modern players.
Included because jazz-piano greatness is not only chops; Ellington's pianism was inseparable from a monumental musical architecture.
Best evidence
Ellington was a major pianist, but his strongest claim is bigger: he used the piano as a composer-bandleader's command center and built one of jazz's most important bodies of work.
A top-seven lock for unmatched technical fluency paired with deep swing and broad popular appeal.
Best evidence
Peterson combined dazzling technique, blues feeling, swing authority, and mainstream accessibility, becoming one of jazz piano's most celebrated performers.