Conversation so far:
What happened in the 1968 assassination attempt with M. G. Ramachandran?
Politician M. R. Radha stood up and shot M. G. Ramachandran in his left ear twice and then tried to shoot himself.
Was M.R. Radha arrested for the assassination attempt against M. G. Ramachandran?
In the assassination trial in May 1967, and later at the Chingleput Sessions Court held under Justice P. Lakshmanan, M. R. Radha was represented by eminent criminal attorney N.T. Vanamamalai.
What were MR Radha's motives for attempting to assassinate MGR?
What was the projectM. G. Ramachandran and M. R. Radha were working on at the time of the assassination attempt?
M. G. Ramachandran and M. R. Radha had met to discuss an unnamed future project.
Any other interesting aspects about M.G. Ramachandran besides the assassination attempt?
After the operation from the attempted assassination, M. G. Ramachandran's voice changed.

Question: How did it change?
Self-contained rewrite: How did M.G. Ramachandran's voice change?