Gaga performed some of Bowie's most popular songs, including "Space Oddity" and "Heroes." She received a standing ovation from the audience when the performance wrapped.
The late singer's son, Duncan Jones, took to Twitter shortly after Gaga's performance concluded.
Jones sent out this tweet after Gaga's performance:
It's the dictionary definition of the word "gaga."
Some people interpreted the tweet as a negative reaction to Gaga's performance.
And others weighed in with their own opinion.
BuzzFeed has reached out to Duncan Jones' rep for comment.
