Complex sentence: He often wore cardigans and jumpers, which became his trademark along with the rocking chairs from which he often performed, and he was sometimes compared to American singer Perry Como, though he has claimed his main influence was Bing Crosby.
Split into simpler sentences: He often wore cardigans and jumpers, which became his trademark along with the rocking chairs from which he often performed. He was sometimes compared to American singer Perry Como, though he has claimed his main influence was Bing Crosby.