Complex sentence: Peter and Gordon told Palmiere at the Las Vegas Festival for Beatles Fans that they were to perform at the 2006 Adopt-A-Minefield show with Paul McCartney but the show was subsequently cancelled by McCartney, due to his impending divorce from Heather Mills.
Split into simpler sentences: Peter and Gordon told Palmiere at the Las Vegas Festival for Beatles Fans that they were to perform at the 2006 Adopt-A-Minefield show with Paul McCartney. However, the show was subsequently cancelled by McCartney, due to his impending divorce from Heather Mills.