
In the late 80s Jon Anderson, Bill Bruford, Rick Wakeman and Steve Howe were struggling to make their second ABWH record. Meanwhile Chris Squire, Trevor Rabin, Tony Kaye and Alan White were struggling to make a follow-up to 1987 Yes album Big Generator.
To the surprise of many, the musicians pooled their resources for 1991 Yes album Union. Ironically it managed to divide fans – but the associated world tour is much more fondly remembered, especially by most of those who took part. Prog asked some of the surviving members about it in 2018.