Born in Hungary, started his music education as a violoncello player, later as a singer but decided not to pursue music after graduating from high school.

Only after receiving a diploma in mathematics and physics from the Szeged University in 1983 did he finally decide on a musical career. While remaining active in music in Szeged, he studied conducting in Budapest at the Ferenc Liszt Academy of Music.

After receiving his diploma in 1988, he was appointed conductor and choir director at the Szeged National Theatre. In the first years of his professional career he was known as a specialist in choirs, a winner of several prizes, professor of choir conducting, a jury member of several international competitions. According to his vocal interest, he has been the artistic director of the oratorio chorus of Szeged since 1988.

After his opera debut in the season 1989/90 he conducts a large repertoire (Mozart, Rossini, Donizetti, Verdi, Wagner, Puccini etc.) not only in Hungary but also abroad. His guest performances in opera are: The Barber of Seville (Spain 1996, UK 1998), The Flying Dutchman (France 1996), The Magic Flute (Holland 1997, Spain 2002) and Turandot (Holland 1998).

His charismatic personality, distinctive musical ideas and wide repertoire have captivated audiences of his concerts in nineteen European countries, where he has been frequently reinvited. His recordings were published, besides Hungarian publishers, by the Belgian Duchesne World Records (Piano concertos of Mozart).

Since his first appearance in Spain, conducting a Christmas Concert in the Royal Basilica of El Escorial, 1991, he has given more than fifty concerts in the major cities of the country, in Madrid, Sevilla, Málaga, Cáceres, Valladolid, Segovia, Soria, Toledo, Cuenca, Murcia, Barcelona, Valencia, Eivissa, Palma de Mallorca, Maó etc. In April 2003, in the Cathedral of Palma de Mallorca, he conducted a passion concert in the official Holy Week program of the Royals, with the presence of Don Juan Carlos and Do?a Sofía.

In 1990 Sándor Gyüdi became associated with the Szeged Symphony Orchestra and was appointed their Director & Principal Conductor in 1999. He has been primarily responsible for enhancing the reputation of the Szeged Symphony Orchestra, who have had wide acclamation on their extensive tours at home and abroad.