Complex sentence: During his three years as Principal Conductor of the LSO, Kertész gave superbly stylish, imaginative and deft performances, and was acclaimed for recordings with that ensemble of the nine Dvořák symphonies, which included the first complete recording of the Symphony No.1.
Split into simpler sentences: During his three years as Principal Conductor of the LSO, Kertész gave superbly stylish, imaginative and deft performances. He was acclaimed for recordings with the ensemble of the nine Dvořák symphonies, which included the first complete recording of the Symphony No.1.