This piece is an experiment on several counts. We have struggled to play the Buxtehude trio sonatas with the proper instruments, (violin, bass viol, bass viol / cello and continuo), and never really produced a satisfactory result. (Buxtehude himself played the viol in these ensembles.) I thought, ah the guitar is a tenor instrument like the obligatto viol, so why not put the obligatto viol part with the bass line on the guitar, and play them with just two people. The piece is originally in Bb so it is moved down a semi-tone to A.
It is quite hard, not to say really hard for a few bars, and I forsee ensemble difficulties so I have done the score landscape so that you can paste it together in an A3 size book without any difficult page turns, so that both players can see what they are supposed to be doing. The guitar part can also get the same treatment to avoid turnovers. Thanks to Johan Tufvesson and Project Runeberg for making some primary material available.
The violin part might fit on other instruments with just a few octave changes.