I just had a look on the imspl site and found the entire score for violin.pogmoor wrote: ↑Wed Oct 31, 2018 1:11 pmThere's some at IMSLP.org including 'Instrumental Pieces for Violin Solo' - in a facsimile of the original manuscript. I haven't looked in these to see if they're suitable, but it would be a good place to start.
I'd only known Roman for his Drottningholm Music which I'd heard on UK Radio 3 - then heard some of it again when I visited the Drottningholm Palace in Sweden a few years ago.
As with the Telemann pieces, some of the movements are a bit thin (single voiced)- but the more contrapuntal ones will be better.
The siciliene that Koch plays is in Eb & he cleverly plays it in the original key but with C major fingering (I think) since his alto guitar is a minor 3rd higher than normal guitar - so (unless he transposes at sight) it's more resonant than it would be on a 6 string (unless a 6 string player transposes to C major).
I note he has filled in some basses. I don't have a problem with that if it sounds convincing (and I know that's subjective) and I think his arrangement works well.