Conversation so far:
Who did the recruit?
Omar.
Why?
recommendation.
By who?
Michal Urbaniak.
Who assited on this?
Zawinul and Shorter recruited.
How old was he?
23-year-old drummer.

Question: What else did they like about him?
Self-contained rewrite: Aside from being a drummer, what else did Zawinul and Shorter like about Omar?