Founding YES bassist Chris Squire has been diagnosed with a form of leukemia called acute erythroid leukemia. As a result, he will be forced to miss the group’s tour this summer for the first time to receive medical treatment in Phoenix, where he resides. He will be temporarily replaced by Billy Sherwood, who played guitar and keyboards as a touring member of YES in 1994 and as a full member from 1997 to 2000.

“This will be the first time since the band formed in 1968 that YES will have performed live without me,” the 67-year-old Squire said in a statement. “But the other guys and myself have agreed that Billy Sherwood will do an excellent job of covering my parts and the show as a whole will deliver the same YES experience that our fans have come to expect over the years.”

YES‘s co-headlining North American tour with TOTO will kick off on August 7 in Mashantucket, Connecticut.

As previously reported, Frontiers Music Srl will release “Like It Is – Yes At The Mesa Arts Center”, a new concert recording from YES, on July 3 in Europe and July 10 in North America.

Available in 2CD/DVD, Blu-ray and digital formats, with a later release planned on vinyl too, this new live album, which follows a similar path to the successful release “Like It Is – Yes At The Bristol Hippodrome”, sees two of the band’s signature albums, 1971’s “Fragile” and 1972’s “Close To The Edge”, performed live in their entirety on the band’s 2014 world tour.

Recorded live on August 12, 2014 at the Ikeda Theater in Mesa, Arizona, featuring Chris Squire, Steve Howe, Alan White, Geoff Downes and Jon Davison, “Like It Is – Yes At The Mesa Arts Center” offers an exciting take on two amazing pieces of music which include live staples such as “Roundabout”, “Heart Of The Sunrise”, “And You And I” and the epic“Close To The Edge”.