Simplify the following text for a Grade 16 native English-speaking person.
Original: In his performing and recording career , Maisky has worked in long-standing partnerships with artists such as the pianists Martha Argerich , Radu Lupu , and Sergio Tiempo , the violinists Gidon Kremer and Janine Jansen , and the conductors Leonard Bernstein , Zubin Mehta , Vladimir Ashkenazy , Daniel Barenboim , and Giuseppe Sinopoli .
Simplified: In his performing and recording career , Maisky has worked with artists such as the pianists Martha Argerich , Radu Lupu , and Sergio Tiempo , the violinists Gidon Kremer and Janine Jansen , and the conductors Leonard Bernstein , Zubin Mehta , Vladimir Ashkenazy , Daniel Barenboim , and Giuseppe Sinopoli .