Friedrich Wieck practice, however, he might not always have lived up to the ideals he described in the book "Piano and Song: How to Teach, How To Learn, and How to Form a Judgment of Musical Performances." When Robert Schumann was living and studying in the Wieck household, he reported seeing Wieck punishing his nine-year-old son, Alwyn, for playing the violin poorly, tearing at his hair and yelling, "You wretch, you scoundrel, is this the way you try to please your father?" Clara seemed unconcerned at the violent scene. Shocked, Schumann wrote in his diary, "Am I among human beings?" Besides the
Clara Petrozzi Gent, Belgium, and the Beyond the Centres Conference of 2010 in Thessaloniki, Greece. Petrozzi is member of the Círculo de Composición del Perú. Clara Petrozzi Clara Petrozzi (former Clara Petrozzi-Stubin, born Clara Cristina Petrozzi Helasvuo on 30 December 1965) is a Peruvian-born violinist, violist, musicologist and composer. She is based in Finland. Clara was born in Lima, Peru in 1965. His father is of Italian descent. Her mother is the Finnish cellist Annika Helasvuo, and her uncle is Finnish flutist Mikael Helasvuo. In 1972 she began studying violin in Lima and Quito, Ecuador with Dee Martz, Manuel Díaz, Mario Ortiz,