Sándor Gyüdi graduated from the University of Szeged's Faculty of Natural Sciences in 1983. While still a university student, he founded the Canticum Chamber Chorus, which went on to win numerous international competitions. As his music activities grew increasingly intensive, he finally decided to pursue a career in music, and specifically, as a conductor. He enrolled at the Ferenc Liszt Academy of Music in Budapest in 1983, and after earning his diploma in 1988, signed with the National Theatre of Szeged, where he worked as chorus director and conductor until 2000. His repertoire spans the most important composers of the operatic literature, and he has made guest appearances as a conductor, outside of Hungary, in France, Spain, the Netherlands and the United Kingdom. In addition to his theatrical activities, he has also conducted numerous highly successful orchestral concerts since 1990. Principal chorusmaster of the Viktor Vaszy Chorus from 1988, he has become known internationally primarily through his oratorio performances, having performed altogether nearly 50 oratorio concerts in Spain, in nearly every one of the country's major cities, including one in 2003 at the royal family's Holy Week concert in the cathedral of Palma de Mallorca. He conducts many opera gala concerts – including more than 50 in Germany alone in recent years – and partners with Hungary's front rank of singers (such as Ilona Tokody, Andrea Rost, Mária Temesi, Zsuzsa Misura, Tünde Frankó, György Melis, József Gregor, András Molnár and Atilla Kiss B.) and international luminaries, and in the summer of 2003 conducted Montserrat Caballé's Hungarian concert. He has also been actively engaged with the symphonic literature since the early 1990s, with a wide repertoire ranging from the Baroque to contemporary music. He regularly partners with some of the most outstanding Hungarian soloists (including Dezső Ránki, Jenő Jandó, Gergely Bogányi, Miklós Perányi, Csaba Onczay and Ferenc Szecsődi) and has performed concerts in 21 countries apart from Hungary with both Hungarian orchestras and in guest appearances with ensembles from Germany, Italy, Spain, Romania, Serbia, Norway, Sweden and Mexico. He has regularly appeared on programmes on Hungarian Radio since 1980, at first primarily on choral recordings, and later on orchestral works as well. His CD recordings have been released on various Hungarian labels as well as by Belgium's Duchesne World Records (Mozart's piano concertos). As a conductor of both operas and concerts, he has enjoyed an increasingly close relationship since the early 1990s with the Szeged Symphony Orchestra, where he served as both director and conductor from 1999 until 2008. Since 2008, he has been the general director of the National Theatre of Szeged.