George has drive, vitality, devotion, an enthusiastic feeling for music, however he does not have some fundamental neurological fitness—his "ear" is deficient. Moreover, the cases of George and Cordelia demonstrate that what musicality involves an incredible scope of abilities and receptivities, from the most rudimentary perceptions of pitch and tempo to the most astounding parts of musical intelligence and sensibility, and that, on a basic level, these are dissociable one from another.
In summary, every one of us, in fact, are more grounded in some parts of musicality, weaker in others, thus have some kinship to both Cordelia and George. Furthermore, Sacks points out that large portions of the patients he portrays in his book are aware of musical misalignments of some sort. The "musical" parts of their brains are not so much at their service, and may in reality appear to have their very own