To me, the greatest pleasure of writing is not what it's about, but the inner music the words make.

Capote frames writing as an aesthetic, almost musical experience: the primary reward is not the subject matter (“what it’s about”) but the sonic and rhythmic qualities of language itself. The quote emphasizes craft over content—attention to cadence, euphony, and the way sentences “sound” internally when read or heard. It also implies a writer’s private pleasure that precedes publication or reception: the satisfaction of shaping language until it achieves an audible rightness. In Capote’s case—often praised for lyrical prose and meticulous revision—the remark aligns with a view of prose as something composed, like music, where meaning is inseparable from tone and rhythm.