Conversation so far:
When did Freddie Mercury start singing?
At the age of 12, Freddie Mercury formed a school band, the Hectics, and covered rock and roll artists such as Cliff Richard and Little Richard.
What was Freddie Mercury like as a singer?
Regarded as one of the greatest lead singers in the history of rock music, he was known for his flamboyant stage persona and four-octave vocal range.
Did Freddie Mercury ever win an award?
Freddie and the other Queen members were awarded the Brit Award for Outstanding Contribution to British Music.

Question: what else was said about his singing?
Self-contained rewrite: What else was said about Freddie Mercury's singing besides his four-octave vocal range?