Math meets music

Geometry is the force that shapes both the sound of music and the novel research of Florida State University composer-theorist Clifton Callender, whose work explores and maps the mathematics of musical harmony.

Christmas Carol Talk

Even without the lyrics, the tunes of some Christmas carols -- such as "Jingle Bells" or "Deck the Halls" -- sound uplifting. But the melodies of other songs like "We Three Kings" have a different, somber sound.

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