Conversation so far:
When did Adam Lambert appear on American TV series The Voice?
Adam Lambert performed a cover of Cher's Believe as a duet with Katie Kadan on the December 17 finale of the seventeenth season of The Voice.
What is wrong with Adam Lambert's voice?
Critics, celebrities and colleagues have been outspoken in their praise for Adam Lambert's vocal command.
Could you tell me more about Adam Lambert's voice?
Adam Lambert's total recorded vocal range spans from bass E to B flat above tenor high C, giving him three octaves and six semitones.
Did Adam Lambert receive any awards?
In 2009, Adam Lambert was the recipient of two awards: the Young Hollywood Award for Artist of the Year and the Teen Choice Award for Male Reality/Variety Star.

Question: Did he have any failures?
Self-contained rewrite: Did Adam Lambert have any failures?