Complex sentence: During his three years as Principal Conductor of the London Symphony Orchestra, Kertész gave superbly stylish, imaginative and deft performances, and Kertész and the LSO were acclaimed for their recordings of the complete Dvorak Symphonies.
Split into simpler sentences: During his three years as Principal Conductor of the London Symphony Orchestra, Kertész gave superbly stylish, imaginative and deft performances. The LSO and he were famously acclaimed for their recordings of the complete Dvorak Symphonies.