Peter Erős
He also taught conducting from 1960–65 at the Amsterdam Conservatory , where his pupils included Hans Vonk , Edo de Waart , and Jan Stulen , and served as Director of Orchestral and Operatic Activities at the Peabody Conservatory of Music from 1982–85 . 
<triplet> Edo de Waart <subj> Amsterdam Conservatory <obj> educated at