Bianca de' Medici
... that Bianca de' Medici played an organ concert for a current pope and a future pope in 1460?
... that <b id="mwAYk"><a href="./Bianca_de'_Medici" id="mwAYo" rel="mw:WikiLink" title="Bianca de' Medici">Bianca de' Medici</a></b> played an organ concert for a current pope and a future pope in 1460?