Born in Ochsenhausen, Kunz first studied music at the Staatliche Hochschule für Musik und Darstellende Kunst Stuttgart.
During his studies he was a member of the Gächinger Kantorei and took choir-conducting lessons with Helmuth Rilling in Frankfurt.
In 1974 he won a prize in the category "Lied and Oratorio" at the ARD International Music Competition in Munich.
In addition to his engagement as a concert singer at home and abroad, he was a lecturer at the music academies in Freiburg and Karlsruhe for many years.
[1][2] In 2002 he was awarded the title Kirchenmusikdirektor (KMD, church music director) by the Landesbischof.