Complex sentence: Both cities were misspelled in the original published lyrics, though that may have been the fault of the publishers rather than Mercer, who was famous for the sophistication and attention to detail he put into his lyrics.
Split into simpler sentences: Both cities were misspelled in the original published lyrics, though that may have been the fault of the publishers rather than Mercer. He was noted for his sophistication and the attention to detail he put into his lyrics.