Conversation so far:
Where did Hardin play the drums?
playing in midtown Manhattan, eventually settling on the corner of 53rd or 54th Street and 6th Avenue in Manhattan.
When was he in a farm accident?
CANNOTANSWER.
When did he move to New York?
From the late 1940s.

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