Rosarte Children’s Choir was founded in 2008 by its conductor, Rosie Mastrosavva with the aim of raising the level of artistry and performance of children. It consists of 250 children and youths, aged between 5 and 20 years. The choir’s guiding principle is to instill in the children a deep love for music and respect for their co-singers and the collaborative work, that choral singing requires, whilst creating a model of artistic excellence.

Rosarte is the only Greek choir to win four gold medals at the Choir Olympics, in Graz-Austria, in Riga-Latvia and in Tshwane,-South Africa.

In December 2016 Rosarte was awarded an honorary distinction by the Academy of Athens, the highest scientific and cultural establishment of Greece, for supreme cultural and artistic achievement. This is a highly respected award, given for the first time to a choir, in the Academy's 90 years history.

The choir has repeatedly appeared in Festivals, collaborating with symphonic orchestras and choirs. It has, also, collaborated extensively with the National Opera of Greece. Moreover, Rosarte has been involved in a variety of productions such as musicals, youth operas, documentaries, recordings.