Conversation so far:
What happened in 2005?
The second installment to the Mixtape Messiah series, Mixtape Messiah 2, was released January 5, 2006.
Did it do well on the charts?
CANNOTANSWER.
What is The Sound of Revenge?
Chamillionaire's first major solo release.
Was it succeswful?
number 10 on the Billboard 200 album chart in the United States.
Were there any tours?
CANNOTANSWER.

Question: What happened in 2006?
Self-contained rewrite: What happened to Chamillionaire in 2006?