Probable error in Trope 21

[JulioHerrlein]

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 !

Julio

 

[opmo]

Indeed, error in the tables.

Well spotted.

[JulioHerrlein]

Another  one !

 

Only 5 notes in TROPE 43 (second hexachord)

(trope-hexachord 43)
((c4 cs4eb4f4g4a4) (d4e4gs4bb4 b4))

 

Yes, I´m researching Hauer now, for writing a paper !

Opusmodus is helping me a lot ! !

 

Best !

Julio

[opmo]

(trope-hexachord 43)

I don't have the book next to me. What is the correct output.

[JulioHerrlein]

Acccording to the book (p. 156), there is a missing b4...

Should be, like

(pitch-transpose 5 (trope-hexachord 43))

 

((f4 fs4gs4bb4c5d5) (g4a4b4cs5eb5 e5))

 

But there is a b4 missing

 

[opmo]

Thank you.

The fix will be part of the next update.

[JulioHerrlein]

Best !

Julio

[opmo]

Done.

(trope-hexachord 21 :start 'e4)
=> ((e4 eb4 d4 g3b3cs4) (fs3bb3c4 f3a3 gs3))

(trope-hexachord 43 :start 'f4)
=> ((f4 fs4gs4bb4c5d5) (g4a4b4cs5eb5 e5))

 

[JulioHerrlein]

Great, Janusz !

Thanks !