In Ind's opinion, Tristano's legacy "is what he added technically to the jazz vocabulary and his vision of jazz as a serious musical craft". "Grove Music"s summary is that "Tristano's influence is felt most strongly in the work of his best pupils ... and in his example of high-mindedness and perfectionism, characteristics which presupposed for jazz the highest standards of music as art." Shim too identified his teaching as part of his legacy: parts of his approach to teaching jazz have become standard practice; and "the sheer number of students he taught, which may easily exceed a thousand", tied to some of them going on to employ what they learned in their own playing and pedagogy, illustrate his influence. Tristano's teaching also affected the art of painter Robert Ryman, who had music lessons with the pianist: Ryman's "technique not only parallels music in general but shares the principles of kinesthetic and multisensorial attention to detail that characterized the teaching of Lennie Tristano."