Conversation so far:
What did Snoop Dogg do in 1998 ?
Snoop signed with Master P's No Limit Records (distributed by Priority/EMI Records) in 1998 and debuted on the label with Da Game Is to Be Sold, Not to Be Told.
What else did he do in 1998 ?
Snoop signed with Master P's No Limit Records .
Did he released any album in 2006 ?
Snoop's 2006 album, Tha Blue Carpet Treatment.
Was that the only album for that year ?
Tha Blue Carpet Treatment, debuted on the Billboard 200 at No.5 and has sold over 850,000 copies.

Question: Did he make any appearances in 1999 ?
Self-contained rewrite: Did Snoop Dogg make any appearances in 1999 ?