CK's performance at the Comedy Cellar - before a crowd of just over 100 - did not address his allegations and was, according to club owner Noam Dwarman, "just like he was trying to work out some new material, nearly like any time of the last 10 years he would come in at the beginning of a new act".
Mo Amer, another comic who was on the bill Sunday, said that for the crowd, "it was like a wow moment".
Comedian Louis C.K. reportedly performed his first comedy set since he admitted to accusations of sexual misconduct made against him made by multiple women a year ago.
After being out of the spotlight for almost 10 months, Louis C.K. returned to the stand-up stage in NY.
One audience member called the club on Monday to object to the surprise set, the owner said.
The news sparked a storm of protest online, but Dworman said "it is not right that he shouldn't be able to perform again".
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Dworman said Louis C.K.
"These stories are true", he said about the allegations. At the time, I said to myself that what I did was OK because I never showed a woman my dick without asking first, which is also true.
A fifth woman, who refused to be named, alleged that in the late 90s when she was working with Louis on The Chris Rock Show he "repeatedly asked her to watch him masturbate".
"The power I had over these women is that they admired me", he wrote, "And I wielded that power irresponsibly".
FX Networks cancelled its deal with the comedian, Netflix scrapped plans for an upcoming stand-up special and HBO removed his work from its on demand video streaming service.