Wow Giovanni,
your Technics is still working, that's amazing. Would have to be something like 20 years old?? Sort of wish I'd kept mine.
A lot of the old Technics styles are available for Roland. If they'd work with the BK7m, don't know, but I imagine they should. I think Technote ended up doing them for the G70. I really did love some of those old Technics styles.
May check into them myself one day when Dan eventually gets VArranger software playing Roland styles ( currently it's capable of playing Ketron & Yamaha formats)
I'm still gigging with my Technics smac1200 module linked to my midi accordion and using a Musictech radio transmitter and Receiver . (of course the musictech system will hook up to any midi module/keyboard and does away with the "umbilical cord " from the accordion to the module /keyboard .
allowing me to walk around and play all the great accomps from the module .
I have a ton of software for the technics , Which i really like and that makes it even harder to change brands ,