User talk:2604:6000:6FC0:44:34CD:242E:4BC8:65FB

The example of "quartal harmony" provided is not in fact quartal harmony at all. Furthermore, there is no "quartal harmony" in Schoenberg's First String Quartet. The musical example provided contains tertian harmony even though the motif expresses the intervals <-7, +13>. Since this claim is dubious, it should be removed and the example either taken down or annotated differently.