Talk:All-interval tetrachord
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Mistake in Image [edit]
The F in the [0,1,4,6] tetrachord in the image should be an E. Starvinsky (talk) 14:13, 4 August 2011 (UTC)
The second musical example, showing the intervals in each tetrachord, is very confusing. Many notes and accidentals are wrong in the intervals extracted from the first tetrachord. Also, wouldn't it be clearer if the extracted intervals were in some rational order, like increasing size? — Preceding unsigned comment added by 146.96.130.201 (talk) 16:31, 22 February 2012 (UTC)
In particular: In the second interval, both A and B should be flatted; in the third, there is no G# in the original tetrachord; in the fourth and fifth, there is no B natural in the original tetrachord; in the sixth, there is no A natural in the original tetrachord.
I'm also not aware of Webern or Schoenberg using this tetrachord much explicitly. There might be a few of them here or there in their music, but I'm pretty sure it's not a significant feature of either's music (as it certainly is in Carter; I don't know about Perle). I don't think either Webern or Schoenberg even knew of the special properties of this tetrachord. The literature on Webern and Schoenberg that I know certainly doesn't mention this. Mind providing citations?
Finally, the second "External Link" is dead. It's also questionable: Carter's Night Fantasies is usually cited as the quintessential example of registrally deployed all-interval twelve-tone series, quite a different phenomenon than all-interval tetrachords. There might be all-interval tetrachords within it, though - it'd be nice to have the link fixed so we can see!146.96.130.201 (talk) 16:45, 22 February 2012 (UTC)
Consistency in Nomenclature [edit]
The page for Tetrachord indicates that traditionally the term refers to four tones spanning the interval of a perfect fourth. The all-interval tetrachord spans an augmented fourth, making it a "tetrad" as per the wikipedia article definitions. It is true that the tetrachord article mentions in passing that some music theorists use the term interchangeably with tetrad, but it is little more than a footnote and does nothing to justify linking to this article (which, if you go there after reading the 'tetrachord' article, jumps out as being more than a little incorrect). 67.163.161.226 (talk) 01:04, 3 May 2012 (UTC)
Proper uses of braces, brackets, etc. [edit]
This article (unlike some articles on related topics) is currently using [] both for sets and interval class vectors. [] is certainly correct for vectors, but sets should be denoted with {}. Does anyone object to correcting this mistake? 65.79.1.34 (talk) 16:59, 13 May 2013 (UTC)
