Two files in one **kern

[davidrizo]

In wtc1p01.krn, line 1195 starts a new header:

.	8d	8f	16cc
.	.	.	16a
=80	=80	=80	=80
!! Five-voice material until the end:
*	*	*	*+
*	*	*	*	**kern
*	*	*	*	*k[]

Is it correct?

[craigsapp]

This is allowed in Humdrum files, but I avoid it and it is otherwise very rare.

*+ is a spine manipulator which means to start a new spine on the next line to the right of the current spine (has happend here). The new spine can also be terminated early with *-. This is mostly useful for ossia, although that can be handled a different way with spine splits.

In this case it might be possible to use spine splits in one voice to indicate a splitting of a voice into two subvoices (which would be preferable). This is a prelude and not a fugue, so strict single-voice spines are not necessary.

But this does not seem to be the prelude since there are 35 measures in the prelude.

I am finding one *+ in wtc1f20.krn. There are otherwise seven cases of an expanded voicing at the end of a composition:

wtc1f15.krn:!! Five-voice material until the end:
wtc1f16.krn:!! Five-voice material:
wtc1f20.krn:!! Five-voice material until the end:
wtc1f24.krn:!! Five-voice material to the end:
wtc2f02.krn:!! Five voices:
wtc2f08.krn:!! Five-voice material to the end:
wtc2f17.krn:!! Five-voice material to the end:

All of the other are handled with spine splits, such as wtc1f15.krn:

=84     =84     =84     
*^      *       *^
!! Five-voice material until the end:
8GG]    8D      8g      2.r     16b

So I will convert the wtc1f20.krn spine addition to a spine split. Strangely, the musical content to the end of the score is commented out:

=80     =80     =80     =80
!! Five-voice material until the end:
*       *       *       *+
*       *       *       *       **kern
*       *       *       *       *k[]
*       *       *       *       *a:
*       *       *       *       *M4/4
!!4D;   4Bn;    4e;     4bn; 4ee;       4gg#;
!!4r    4r      4r      4r      4r
!!4D#   4A      4c      8r      [2aa
!!.     .       .       16a     .
!!.     .       .       16g#    .
!!4r    4r      4r      8a      .
!!.     .       .       8b      .
!!=81   =81     =81     =81     =81

I will remove the comments as well as create a spine split.

[craigsapp]

Fixed with commit 9427b88

Although further enhancement can be done.

Also this score is a copy of wtc1f20.krn:

https://github.com/humdrum-tools/bach-wtc-fugues/blob/master/kern/wtc1f20.krn

so should also be fixed by coping the update to that repository as well.