(CNN) -- Michael Jackson's "live" performance at the 2014 Billboard Music Awards brought a mixed reaction Sunday night. "Uncomfortable, odd and eerily interesting," is how public relations agent Simone Smalls summed it up in a tweet. "Not quite sure what to feel. #MissingMJ" Uncomfortable because Jackson died nearly five years ago while preparing for a comeback tour. His remains are resting in a crypt in a Forest Lawn mausoleum. But technology tricked viewers -- and the celebrity audience in the MGM Grand Garden Arena in Las Vegas -- into suspending disbelief for a few minutes to watch the pop icon onstage dancing and singing his "new" song "Slave to the Rhythm."
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Michael Jackson fan: "Not quite sure what to feel" about "hologram" performance
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Fans complain it wasn't as good as MJ, but what else is?
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Kendall Jenner gets buzz for botching 5 Seconds of Summer intro
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Lorde says she's not the 15-year-old she was when she recorded "Royals"
@placeholder's said she's had "the opportunity to grow and learn as a new artist" in the last year "in the spotlight."