Peter Johannes Maag ( May 10 , 1919 -- April 16 , 2001 ) was a Swiss conductor . Ernst Peter Johannes Maag ( Peter Maag ) ( 10 May , 1919 -- 16 April , 2001 ) was a Swiss conductor .
Peter Johannes Maag (10 Mei 1919 - 16 April 2001) merupakan konduktor Switzerland. Ernst Peter Johannes Maag (Peter Maag) (10 Mei 1919 - 16 April 2001) merupakan konduktor Switzerland.