Since the 1980s , she has staged few solo performances , concentrating instead on concertos and , in particular , chamber music .
Since the 1980s , she has staged few solo performances , concentrating instead on concertos and , in particular , chamber collaborating with instrumentalists in sonatas .
Since the 1980s , she has staged few solo performances , concentrating instead on concertos and , in particular , chamber music , and collaborating with instrumentalists in sonatas .