Complex sentence: Having failed to take along a Selmer Modèle Jazz, which he had made famous, he had to play on a borrowed electric guitar, with which he was unable to express the delicacy of his style.
Split into simpler sentences: Having failed to take along a Selmer Modèle Jazz, which he had made famous, he had to play on a borrowed electric guitar. He was unable to express the delicacy of his style.