Twoset Violin: Passacaglia - Heifetz/Handel/Halvorsen

Twoset Violin performs Passacaglia
(Edited Description)
Originally on Harpsichord, then on violin and viola, now on just two sets of violins!
I think this is transposed for violins by heifetz.
Correct me if I’m mistaken. :)
Credits to ‪@islamiller40‬ for the idea of this video!
(ty!)