My Dad used to play Russian Guitar. He learnt it during his youth in Eastern Poland and played very well. Still does occasionaly but not much nowadays. Never got a 7 string while he was here in the UK but made do with a 6 string tuned to open G and changing the 3rd or 4th from one note to another to allow for different tunes. He mentioned that before he left Poland in WW2 he also played an 11 string - Which was the 7 with 4 'drones' that the left hand never touched.

I was surprised on my visit to the 'States last year to disciver that my Aunt in St Louis was also a Russian guitarist. I have only known her 50 odd years and never knew she even played!

The only tune I can remember that my Dad taught me, played on a 6 in open G, is the 'Waltz of the Bells'.

Cheers

DtG