Gaál has performed at numerous domestic and international festivals and concert stages (Austria, Hungary, Poland, Germany, Russia, etc.). He has appeared with the Slovak Philharmonic under the baton of Libor Pešek, Oliver Dohnányi, Hikmet Şimşek, and others. He collaborates with the Slovak Television and Slovak Radio. In the field of chamber music, he has worked with several performers.

He is also involved in pedagogical activities, having taught in Portugal, at the Academy of Performing Arts in Bratislava (VŠMU), and at the Institute of Music Arts (IpUS) at the University of Ostrava.

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