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Revisiting the music of her youth, Martina Janková keeps a vocal tradition alive and explores European expressions of national identity.

It’s never an easy thing to jump in for a concert, especially not when there is a historical instrument involved. The sign on the door of the Wiener Konzerthaus upon our arrival Monday evening, explaining that Vanessa Wagner had to cancel her part as pianist at the last minute and would be replaced by Gérard Wyss, did not bode well.