[1][2] While a student in Vienna, the Soviet Union funded his participation in the first Tchaikovsky Competition.
He specialized in accompanying singers,[4] having worked with Anneliese Rothenberger, Peter Schreier,[5][6] Dietrich Fischer-Dieskau,[7] Brigitte Fassbaender, Hermann Prey, Margaret Price and Thomas Quasthoff,[8] and also with instrumentalists such as violinist Nathan Milstein and cellist Heinrich Schiff.
[citation needed] Between 1983 and 1991, Shetler taught Piano and Lied Accompaniment at the Würzburg School of Music and Drama.
[2] Beginning in 1992, he was a professor at the University of Music and Performing Arts in Vienna.
[14] His show "Musical Puppet Cabaret" toured internationally, in festivals and on television.