From 1843 until his death , he was the organist at the Church of Our Lady in Copenhagen .
Johan Peter Emilius Hartmann ( 1805 -- 1900 ) contributed to song and the piano repertory as well as to opera and ballet music .
From 1843 until Johan Peter Emilius Hartmann 's death , Johan Peter Emilius Hartmann was Johan Peter Emilius Hartmann organist at the Church of Our Lady in Copenhagen .
Johan Peter Emilius Hartmann ( 1805 -- 1900 ) contributed to song and the piano repertory as well as to opera and ballet music .