Conversation so far:
Where did the band Focus originate from?
Focus are a Dutch progressive rock band formed in Amsterdam.
Who were the members of the band Focus?
The current members are Thijs van Leer, Pierre van der Linden, Menno Gootjes, and Udo Pannekeet.
What country did the members of the band Focus originate from?
Van Leer and van der Linden are from the Netherlands.

Question: What year did Focus disband?
Self-contained rewrite: What year did the band Focus disband?