. "harmonic structure" . . . . "natural harmonics" . "multi-harmonic" . "harmonic component" . "Natural harmonic" . "subharmonics, superharmonics or subsuperharmonics" . "harmonic overtone" . . "partial" . "Harmonic" . . "harmonic sounds" . . . "Harmonics" . "harmonizing" . "Harmonic" . "artificial harmonic" . "higher harmonic" . . . . "natural" . "high-harmonics" . . "harmonic waves" . "harmonic content" . . . "third harmonic" . . "harmonic wave" . . "Beats, in music" . . . . . "music" . "Sons Harmoniques" . . "higher-powered harmonics" . "harmonic frequencies" . . . . . . . "harmonic" . "Sounds, Harmonical" . . "\\\"harmonics\\\"" . "harmonic emissions" . "musical harmonics" . "higher harmonics" . . "harmonics" . . "harmonically-related" . "flageolet" . . . . . "harmonic ratio" . . "partials" . .