Conversation so far:
What first happened to in 2001 to Yes?
In 2001, Yes released their nineteenth studio album Magnification.
Did Yes' album Magnification do well on the charts?
The record was not a chart success; it peaked at number 71 in the UK and number 186 in the US
Were any of Magnification's singles a success?
Did Yes tour with the Magnification album?
Yes supported Magnification with their Yessymphonic Tour of North America and Europe between July and December 2001 with the band accompanied by an orchestra for each show

Question: Who were the members of the group at the time of Magnification?
Self-contained rewrite: Who were the members of Yes at the time of Magnification?