Ptarmigan,
I just added another clip to YouTube using the Wheatstone 48 key baritone to illustrate the talk about fanning the bellows, having the strong beat on pull, and articulating 'violin-bow-wise'
In case you are curious...
Goran

Concertina bellows management 3

http://www.youtube.com/watch?v=Pt4YpRFxJqA