Still the Weekend, but Concertina instead of Pipes

Alistair Anderson & Richard Thompson again, this time without pipes . . . but they are playing "Madame Bonaparte", a version of which exists as a nice pipe tune.
I used to play a bit of Anglo concertina. Just hacking around though; nothing like this. This is what is meant by virtuouso. I wonder what a decent concertina costs these days. I'm afraid to look it up. I still have to make the second paypment on my new border pipes, which should be ready pretty soon now.