Conversation so far:
What happened in the 1967 assassination attempt?
During the conversation, M.
R.
Radha stood up and shot MGR in his left ear twice and then tried to shoot himself.
Was he arrested?
CANNOTANSWER.
What were the motives?
On 12 January 1967, Radha and a producer visited MGR to talk about a future film project.
What was the project?
future film project.
Any other interesting aspects about this article?
After the operation, MGR's voice changed.

Question: How did it change?
Self-contained rewrite: How did MGR's voice change?