Hi all
I'm notating a sonata for a cello and piano, and I would like to produce
three "artifacts" (products?) from this:
1. A solo cello part (a typical single staff representation)
2. A "study score" where all staves are equivalent sizes
3. An accompaniment part for the piano, where the cello is above in a
smaller staff
Now, the problem I'm facing is that there are plenty of "accel." and "rit."
marks with lines/spanners that I would like to be treated like tempo
markings, so that they are presented in the following ways:
1. Normally for the solo cello part
2. Only above the entire system in the "study score" product
3. Above both the piano and the solo part in the "accompaniment" product
The way I have designed the music input is like:
```
lattice = { s1 \tempo "Andante" 4 = 72 | s1 }
cello = << \lattice \relative c { a4 b c2 | d1 } >>
left = << \lattice { ...some music... } >>
right = << \latttice { ... } >>
```
i.e., so that the tempo lives in its own spaced-out voice, which provides
the tempo to the rest of the staves but doesn't have its own staff to
print. This seems to work, but I'm missing some key knowledge about how to
handle the above scenarios. In particular, I don't know how to
1. treat a tempo marking and/or textmark as a spanner, so that it can have
a dotted connecting line between tempo changes
2. toggle these tempo changes based on the requirements above -- sometimes
only above the whole system, sometimes above the grand staff and the cello
part (but not the left hand)
I haven't been able to find the right documentation for this -- it seems
like the only way to use a spanner is within a particular staff. Perhaps my
approach is completely wrong, and I would love to know the best approach. I
imagine this has to be a common (and hence solved) problem.
Thanks
Tom
