What is the fine-grained topic of the following text: From a very early age she appeared as a soloist with many orchestras including the Tonkünstler-Orchestra Lower Austria, Osaka Philharmonic, Hong-Kong Philharmonic, New Japan Philharmonic, Metropolitan Police, the Sapporo Symphony and the Okayama Symphony orchestras. Only return the topic.
A young female soloist's performances with various orchestras.