Classical music has its own version of the tritone sub, which, of course, predated the jazz version. It results from the outer voices (usually soprano and bass) moving in contrary motion into the ...

The "Neapolitan 6th" chord (N6) is another sonority whose definition is based on the triad that it makes, which is a vertical perspective that glosses over its actual horizontal function. It is ...

The world's longest concert, expected to finish in 2640, was one step closer to the end as the sixth chord of John Cage's As Slow As Possible was played on a church organ in Germany, eight years after ...