Original: She regularly performed with conductors such as Barbirolli, Sargent, Sir Adrian Boult, Daniel Barenboim, Zubin Mehta, and Leonard Bernstein.
Simplified: She regularly performed with conductors such as Barbirolli, Sir Adrian Boult, Sir Malcolm Sargent, Daniel Barenboim (her husband), Zubin Mehta, and Leonard Bernstein.