According to Mirror.co.uk, QUEEN guitarist Brian May pulled out of this past weekend's Princess Diana Memorial Concert to avoid embarrassing himself and others. May was supposed to perform the QUEEN hit "Under Pressure" with British soul singer Joss Stone.Phil Symes, a spokesperson for May, told the Daily Mirror, "He was never confirmed although they were in discussions about it. Brian's up to his ears trying to complete his PhD thesis [on astronomy]so he couldn't do it." Brian now admits on his web site: "Yes, the wonderful Joss Stone DID ask me to play 'Under Pressure' with her, and initially I did say yes. But when I realized how very different the arrangement was from the original, I realized that I was not going to be able to do it justice. So we talked, and I apologized, and we agreed that we would get together and create something new instead sometime soon."