Jacques Chirac | Jean-Jacques Rousseau | Jacques Offenbach | Jacques-Louis David | Jacques Brel | Jacques Lacan | Jacques Derrida | Jacques Cartier | Jacques Cousteau | Jean-Jacques Goldman | Jacques Lipchitz | Jacques Higelin | Jacques Dutronc | Jacques Delors | Jean-Jacques Annaud | Jacques Rouvier | Jacques Rogge | Jacques Prévert | Jacques Villeneuve | Jacques Lanzmann | Jacques Hébert | Jacques Brel is Alive and Well and Living in Paris | Jacques Attali | Jacques | Long-Thibaud-Crespin Competition | Jacques Monod | Jacques Maritain | Jacques Kallis | Jacques Fath | Jacques Anquetil |
Other performers in Timișoara have included pianists Annie Fischer, Artur Rubinstein, and Carlo Zecchi; violinists Bronisław Huberman, Fritz Kreisler, Jacques Thibaud, and Eugène Ysaÿe; and cellists Pablo Casals and Gregor Piatigorsky.
During her conservatory years she won prizes in the prestigious Enescu, Marguerite Long–Jacques Thibaud and Queen Elizabeth international piano competitions in Bucharest, Paris and Brussels.
In 1903, with financial support from the patron François Franck, Mortelmans founded the Maatschappij der Nieuwe Concerten ("Society of New Concerts") in Antwerp, which attracted notable guest conductors and artists such as Gustav Mahler, Siegfried Wagner, Hans Richter, Richard Strauss, Sergei Rachmaninoff, Pablo de Sarasate, Jacques Thibaud, Pablo Casals, and Fritz Kreisler.
In 1943 she and violinist Jacques Thibaud established the Marguerite Long-Jacques Thibaud International Competition for violinists and pianists, which takes place each year in Paris.