 In Frankfurt , Rose established herself as a teacher of English ; her earnings were supplemented by contributions from John Grainger , who had settled in Perth . The Hoch Conservatory 's reputation for piano teaching had been enhanced by the tenure , until 1892 , of Clara Schumann as head of piano studies . Grainger 's piano tutor was James Kwast , who developed his young pupil 's skills to the extent that , within a year , Grainger was being lauded as a prodigy . Grainger had difficult relations with his original composition teacher , Iwan Knorr ; he withdrew from Knorr 's classes to study composition privately with an amateur composer and folk @-@ music enthusiast , Karl Klimsch , whom he would later honour as " my only composition teacher " . 
