Three of hip-hop's biggest stars rejected offers to perform on music's biggest night.producer Ken Ehrlich said Drake, Kendrick Lamar and Childish Gambino all turned down opportunities to perform at .
Ehrlich said he offered all three artistsbut they all declined. CBS News has reached out to representatives for Drake, Kendrick Lamar and Childish Gambino for comment.
The Grammys has received criticism for the show's lack of diversity and appreciation of hip-hop in the past. Last year, fans were astounded that Jay-Z, who was the most nominated artist, didn't win any of the eight Grammys he was up for. Lamar won five awards but lost the highly coveted album of the year award. He later went on toFans have often wondered how Lamar could win a Pulitzer for his rap but lose a Grammy to the more pop centric Bruno Mars.
Last year, President of the Recording Academyafter saying women who want to be part of the industry need to "step up." Critics said the Grammys awarded too few female artists in 2018.
When asked backstage how women could be better represented, Portnow said: "It's hard to have a balanced show. Think it has to begin with women who have the creativity in their hearts and their souls who want to be musicians to step up. Because I think they would be welcomed."
In a statement, Portnow told CBS News his words "step up" were taken out of context, and do not convey his beliefs, or the point he was trying to make.
A number of female artists slammed his remarks, including Pink who tweeted "Women in music don't need to 'Step up' -- women have been stepping since the beginning of time."
In response, the Recording Academy created a diversity and inclusion task force, which would examine "barriers and biases affecting women and other underrepresented voices in the music industry and, specifically, the Recording Academy."
Despite the Recording Academy's efforts, it is unclear if some artists will even show up to the Grammys this year.with big album releases were snubbed.
After the major snub last year, Jay-Z rapped the lyric "Tell the Grammys f**k that zero for eight s**t" on the track "APES**T." What followed was yet another snub from the Recording Academy for his and wife Beyoncé's joint album "The Carters," which only got one nomination. Taylor Swift's "Reputation" only received one nomination, too.
And Ariana Grande, who released an album in August, only received two nominations. The pop star also addressed Ehrlich publicly on Thursday, calling him a "liar."
Ehrlich said the Grammys had several conversations with Grande about performing on Sunday. He said Grande "felt it was too late for her to pull something together," The Associated Press reported. On Thursday, the pop star tweeted a response "i've kept my mouth shut but now you're lying about me. i can pull together a performance over night and you know that, Ken. it was when my creativity & self expression was stifled by you, that i decided not to attend. i hope the show is exactly what you want it to be and more."
It is unclear if Grande will still be attending the Grammys on Sunday. She brings the total number of artists who turned down performances to four, according to Ehrlich himself.
The Recording Academy has not returned CBS News' request for comment.