[2] In 1924, he enrolled at the Academy of Music and Performing Arts in Vienna, where he studied composition with Franz Schmidt and Joseph Marx and conducting with Clemens Krauss and Alexander Wunderer.

Rajter was invited to conduct several European orchestras during this time and premiered works of numerous Hungarian composers, including the Symphonic Minuets by Ernő Dohnányi.

[4] During the Stalinist period, Rajter was deemed "politically non-reliable"[citation needed] by the communist regime at the time, which led to a prohibition on his conducting.

In 1970 he conducted the nine symphonies by Ludwig van Beethoven for the first time in Bratislava as a complete cycle, a project for which he received the Ján Levoslav Bella Prize in the following year.

In 1991, Hungary appointed Ľudovit Rajter as an honorary member to the Savaria Symphony Orchestra in Szombathely for life.