Answer by taking a quote from the following article:

Whitney Elizabeth Houston (August 9, 1963 - February 11, 2012) was an American singer, actress, producer, and model. In 2009, Guinness World Records cited her as the most awarded female act of all time. Houston is one of the best-selling music artists of all-time, with 200 million records sold worldwide. She released seven studio albums and two soundtrack albums, all of which have diamond, multi-platinum, platinum, or gold certification.

The Clive Davis's pre-Grammy party that Houston was expected to attend, which featured many of the biggest names in music and movies, went on as scheduled although it was quickly turned into a tribute to Houston. Davis spoke about Houston's death at the evening's start:  By now you have all learned of the unspeakably tragic news of our beloved Whitney's passing. I don't have to mask my emotion in front of a room full of so many dear friends. I am personally devastated by the loss of someone who has meant so much to me for so many years. Whitney was so full of life. She was so looking forward to tonight even though she wasn't scheduled to perform. Whitney was a beautiful person and a talent beyond compare. She graced this stage with her regal presence and gave so many memorable performances here over the years. Simply put, Whitney would have wanted the music to go on and her family asked that we carry on.  Tony Bennett spoke of Houston's death before performing at Davis's party. He said, "First, it was Michael Jackson, then Amy Winehouse, now, the magnificent Whitney Houston." Bennett sang "How Do You Keep the Music Playing?" and said of Houston, "When I first heard her, I called Clive Davis and said, 'You finally found the greatest singer I've ever heard in my life.'"  Some celebrities opposed Davis' decision to continue on the party while a police investigation was being conducted in Houston's hotel room and her body was still in the building. Chaka Khan, in an interview with CNN's Piers Morgan on February 13, 2012, shared that she felt the party should have been canceled, saying: "I thought that was complete insanity. And knowing Whitney I don't believe that she would have said 'the show must go on.' She's the kind of woman that would've said 'Stop everything! Un-unh. I'm not going to be there.' [...] I don't know what could motivate a person to have a party in a building where the person whose life he had influenced so enormously and whose life had been affected by hers. They were like... I don't understand how that party went on." Sharon Osbourne condemned the Davis party, declaring: "I think it was disgraceful that the party went on. I don't want to be in a hotel room when there's someone you admire who's tragically lost their life four floors up. I'm not interested in being in that environment and I think when you grieve someone, you do it privately, you do it with people who understand you. I thought it was so wrong."

what did others say?
Chaka Khan, in an interview with CNN's Piers Morgan on February 13, 2012, shared that she felt the party should have been canceled,