Lipa Gondorov was a slovakian wet nurse who contracted Hansen's disease while breast feeding an infant. She moved shortly afterwards to a Hansen's colony in Prague where she worked at the infirmary, singing the infants to sleep with improvised lullabies. A visiting nun named Helene de la Harpe, transcribed some of them for use in church chorales. In the 20th century, these transcriptions were re-discovered by Olivier Messaien, who was deeply moved by their bizarre yet bewitching melodies, and based his celebrated Chronochromie in part on variations of their themes.