The first executive producer was Neil Aspinall, then-manager of Apple Corps Ltd. Dominic Champagne shares the show concept creator credit with Gilles Ste-Croix (a founder of Cirque), who is also credited as the director of creation. The creation director is Chantal Tremblay. Tickets went on sale April 19, 2006. Preview performances ran from June 2 to June 29. During these shows, including June 16 and June 17 which were attended by McCartney, changes were made nightly based on audience reaction, cutting or adding sections to add polish. In attendance at the gala opening on June 30 were McCartney, Starr, Ono, Cynthia Lennon, Julian Lennon, Olivia and Dhani Harrison, and George Martin. It was the biggest reunion of the Beatles' 'family' since the band's breakup. At the end of the show, McCartney, Starr, Olivia, Ono and Martin went on stage. McCartney requested the crowd, "Just one special round of applause, for John and George!"