Phil Carson, then-European General Manager of Atlantic Records,[5] decided that as Iron Butterfly could attract enough of an audience to fill the venues on their tour, it would be good exposure for Yes as he was trying to break them into the American market at the time.
[8] Steve Howe joined the band two months previously: all concerts during May and June were cancelled while the band found a replacement for original guitarist Peter Banks, and Tony Kaye was replaced by Rick Wakeman shortly after the tour ended in time for rehearsal sessions for Fragile.
[9] On the 1970 shows, the set list consisted of:[10] The 1971 shows had a typical setlist of: Other songs played: On various dates of the tour, Yes were supported by Black Sabbath,[2] Uriah Heep,[2] Supertramp,[2] Deep Purple,[2] Wishbone Ash,[2] The Strawbs,[10] Iron Butterfly,[10] Queen,[11] and Jethro Tull.
[4] Beginning with the 1971 dates (when Yes began to be supported by Iron Butterfly), ticket prices were set at 10s[10]—approximately £10 ($16 USD) in 2012.
[12] After leaving France, the band had to cancel some UK shows after their van was involved in a road collision.