His father, Sándor Sebestyén (1891–1962),[2] studied cello with Adolf Schiffer and Arnold Földesy and was the author of several pedagogical works.
His concert tours as organ and harpsichord soloist took him to Russia, India, the Philippines, Taiwan, Japan, the United States and nearly every country in Europe.
He was invited to serve on juries for organ and harpsichord competitions in France, the Czech Republic, Poland, Italy and Switzerland.
From 1950 on, he worked for Hungarian Radio in various capacities, serving as senior music producer between 1969 and 1994, and from 1962 until 2007 he contributed a regular series of programs documenting culture, politics and history.
More than 80 LP and CD recordings have been published by various labels including Angelicum, Ariston, Balkanton, BAM, Il Canale, CBS Italiana, Fonit Cetra, Hungaroton, Naxos, Supraphon, and Vox.