Conversation so far:
What is important about the Mike Batt era?
the band brought in producer Mike Batt (best known for his musical association with the Wombles and, more recently, Katie Melua) to work on their eighth album.

Question: How well did the band perform when they brought in the producer Mike Batt and Katie Melua?
Self-contained rewrite: How well did the band perform when Mike Batt era brought in the producer Mike Batt and Katie Melua?