I have recently discovered the videos with a duo named Raiz Latina. The duo is composed of Irina Aleksandrovskaya brazilian ten-string mandolin and Saden Ferganiy seven-string flamenco guitar.
The duo plays Brazilian Choro music and also Spanish music arranged for 10-string bandolim and guitar.
I have not found more information, but the videos are great to watch.
Playlist Raiz Latina