Comedy Cellar owner Noam Dworman told editors at The Wrap the show, which was not announced, was "typical Louis C.K. stuff" with jokes about racism, waitresses tips and parades.
"It sounded 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", Dworman told the Times.
But he also said he was surprise at how quickly Louis C.K. has chose to start performing again.
Despite the audience giving Louis a standing ovation, Dworman said at least one member of the crowd called the club to complain and many voiced their opinions on social media, as well.
The news sparked a storm of protest online, but Dworman said "it is not right that he shouldn't be able to perform again".
Louis CK has made his first stand-up appearance since his sexual misconduct scandal broke. "But he chose to just rip the Band-Aid off", he told the paper.
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Dworman did say, however, that "there can't be a permanent life sentence on someone who does something wrong".
Unfortunately for some of the guests who would rather not have seen him, Louis CK's appearance was unannounced and was not listed on the bill when people bought their tickets, which prompted some on Twitter to suggest it would have been better for the comedian to receive "consent" before dropping in unannounced.
The comedian released an official statement to Fox News at the time and expressed remorse.
"I didn't think it was going to happen as soon as it did", he told the newspaper. "I have spent my long and lucky career talking and saying anything I want". These men, including men like C.K., who actually admitted that they did what they were accused of, go away for a few months and then make a triumphant return that is hailed as a win for justice and redemption by other men.