Conversation so far:
What songs did Max Martin produce with Cheiron and Denniz PoP?
In 1993, Max Martin was hired by Cheiron Studios and spent time learning the basics, before the first production collaboration between PoP and Martin: Wish You Were Here in 1994.
What artist sang the song Wish You Were Here produced by Max Martin and Denniz PoP?
Rednex sang the song Wish You Were Here“
Are there any interesting facts about Max Martin working with Cheiron and Denniz PoP?
Max Martin and Denniz PoP worked on albums by 3T, Army of Lovers and Leila K.
What other groups did Max Martin work with besides 3T, Army of Lovers and  Rednex?
Denniz PoP and Max Martin both worked on Ace of Base's second album, The Bridge (1995).
Did Max Martin produce any songs with Ace of Base?
Max Martin co-produced Beautiful Life,  Never Gonna Say I'm Sorry“, Lucky Love, and Blooming 18 on Ace of Base's The Bridge album.

Question: Did he ever retire from producing music for other bands?
Self-contained rewrite: Did Max Martin ever retire from producing music for other bands?