Hi guys,
my friend published a new set of videos about BK-9,
this time with Organ sounds and audio key.

Organ on BK-9 1
Organ on BK-9 2
Organ on BK-9 3
Organ on BK-9 4
Organ on BK-9 5
Organ on BK-9 6

Audio Key on BK-9 1
Audio Key on BK-9 2
Audio Key on BK-9 3
Audio Key on BK-9 4
Enjoy!

P.S. I'm not the owner of the youtube channel, so if you have any question please try to contact him directly
Bye!