Noah referred to the Academy Awards altercation between Smith and Chris Rock in his opening monologue.
Questlove also made a note of it before presenting Song of the Year.
“Don’t even think of it as an award show.

Will Smith slapping Chris Rock at the Oscars was referenced multiple times at this year’s Grammys, which took place one week later.Al Seib /A.M.P.A.S. via Getty Images; ANGELA WEISS/AFP via Getty Images
This is a concert where we’re giving out awards.
Another reference came in the pre-show ceremony.
LeVar Burton introduced nominated comedian Nate Bargatze by saying, “The next presenter is a comedian.
I need to caution everybody: remain in your seats and keep your hands to yourselves.”
“I betrayed the trust of the Academy.
I deprived other nominees and winners of their opportunity to celebrate and be celebrated for their extraordinary work.