12-tone music

Western music is based on the 12-tone system. The Catholic Church banned the wolf interval as offensive to the ear, but it is heavily used in death metal music and is very hard to sing unless the vocalist employs a false chord technique, also known as a scream or a growl. I think the Sabaton singer does it … maybe not.

This excellent video shows the connection between geometry and music. Some students have a harder time developing numeracy than they do with literacy or musicality. I placed a metronome on my piano and found it to be unnecessary. I suppose numerical timing and beat were already firmly fixed in my body, specifically in my foot.
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