Conservatorium van Amsterdam alumni

Aaltje Noordewier–Reddingius (née Reddingius; 1 September 1868, Deurne – 6 April 1949) was a Dutch classical soprano who had an active performance career in the concert repertoire from 1888 through the 1930s. She was also a celebrated voice teacher.From 1886 to 1890, she studied at the Conservatorium van Amsterdam. In 1893, she married painter Michiel Noordewier. She was a mentor to singers such as Aafje Heynis, Erna Spoorenberg and Laurens Bogtman.

Richard (or Rijk) Hol (23 July 1825, in Amsterdam – 14 May 1904, in Utrecht) was a Dutch composer and conductor, based for most of his career at Utrecht. His conservative music showed the influence of Ludwig van Beethoven, Felix Mendelssohn, and Robert Schumann and the Leipzig school, though as a conductor he offered Dutch audiences the more revolutionary music of Hector Berlioz and Richard Wagner.