A thousand apologies if this link is inappropriate, but I just stumbled on a radio(?) broadcast of this overture on Youtube. The orchestra is Detroit Symphony and the conductor is Karl Krueger, who was music director there from 1943-49. The sound is primitive, so it will be helpful to already know the piece. I have loved this overture for years, and played/hacked through it many times since acquiring an old vocal score of the opera in the late 1970's. I was surprised at how little the recent Naxos recording captured its magic, but as this older performance clocks in at 10:00...almost 3 minutes longer than the Poznan Phil. version, tempo is obviously a consideration. Anyway, far from perfect, but fascinating...at least to a Mataswintha fan...
David
https://www.youtube.com/watch?v=a2QQblID6_Y (https://www.youtube.com/watch?v=a2QQblID6_Y)