Conversation so far:
Where did American musician, Moondog play the drums?
Moondog played drums for the high school band in Hurley, Missouri before losing his sight at the age of 16 in a farm accident on July 4, 1932.
When was Moondog in a farm accident?
Moondog lost his sight at the age of 16 in a farm accident on July 4, 1932.
When did Moondog move to New York?
In 1943, Moondog moved to New York.

Question: When did he get his nickname?
Self-contained rewrite: When did Louis Thomas Hardin get his nickname Moondog?