Conversation so far:
Is Adam's voice special?
Lambert's total recorded vocal range spans from bass E to B flat above tenor high C (E2 - B5), giving him three octaves and six semitones.
Did Adam like to sing as a child?
CANNOTANSWER.
What do people normally say about his voice?
Critics, celebrities and colleagues have been outspoken in their praise for Lambert's vocal command.
Who has his voice been compared to?
Whitney Houston and Aretha Franklin.
Have things have celebrities said about his singing?
Queen guitarist Brian May noted that Lambert's voice has "sensitivity, depth, maturity, and awesome range.
Who else has talked about his voice?
Pharrell Williams.
What did Pharrell say?
This kid has a voice like a siren - there's no guys singing in that Steve Winwood-Peter Cetera range.
Is there anything else important?
In October 2012, British tabloid the Sunday Mirror reported that Lambert had insured his voice.
How much did he insure it for?
$48 million.
Was there any more interesting things about Adam?
Record producer Rob Cavallo once described Lambert as having an unlimited range, and able to sing every note on a guitar from the lowest to the highest.

Question: What is his range?
Self-contained rewrite: What is Adam Lambert's range?