Helder started to compose and play the piano at the age of 8. From the age of 11 she continued her studies amongst others at the conservatories of The Hague, Rotterdam and Amsterdam. Her composition professors where amongst others Roderik de Man, Klaas de Vries and Theo Loevendie. Besides piano she studied double bass, violoncello and classical voice. In March 2012, Universal Edition Vienna announced the publication of Helder’s orchestration of Mahler’s Piano Quartet, commissioned by the Rotterdam Philharmonic Orchestra. It was premiered in May 2013 by the RPhO and James Gaffigan. The Asian premiere was
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