Jump to content

Probable error in Trope 21

Recommended Posts

Dear All,

The second half of trope 21 is showing a note repetition.

(trope-hexachord 21)

((c4 b3 bb3 eb3g3a3) (d3fs3gs3 cs3f3 fs3))


The pitch-class  fs3 appears twice, comprising a 5 note set (it should be an hexachord, a 6 note-set)

(d3fs3gs3 cs3f3 fs3))


According to Sedivy (2011, pg 134) the trope 21 is shown below:




In Sedivy´s book, this trope are shown starting in E, thus


(pitch-transpose -8 (trope-hexachord 21)), thus


((e3 eb3 d3 g2b2cs3) (fs2bb2c3 f2a2 bb2))


There is a repetition of two Bb pitch classes in the second hexachord

(pitch-transpose -8 (melodize (last (trope-hexachord 21))))


((fs2 bb2 c3 f2 a2 bb2))


According to the book, the last note should be an Ab, not a Bb, like


((e3 eb3 d3 g2b2cs3) (fs2bb2c3 f2a2 ab2))


All the best !



Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

Terms of Use Privacy Policy