Q: Context: "In da Club" is a hip hop song performed by American rapper 50 Cent from his debut studio album Get Rich or Die Tryin' (2003). The song was written by 50 Cent, Dr. Dre, and Mike Elizondo and produced by Dr. Dre with co-production credit from Elizondo. The track was released in January 2003 as the album's lead single and peaked at number one on the Billboard Hot 100, becoming 50 Cent's first number one single on that chart.

Question: who produced in the club by 50 cent?
Let's give stream of consciousness below
To answer this question, we should know that: The song was written by 50 Cent, Dr. Dre, and Mike Elizondo and produced by Dr. Dre with co-production credit from Elizondo. So the answer is Dr. Dre with co-production credit from Elizondo.