It came after the award show shut out its only female nominee for Album of the Year.
After online outrage, Portnow has backed off his controversial statement that women in music need to "step up."
Anyone who thinks women in the music industry phoned it in in 2017 wasn't paying attention.
"You almost put a blindfold on and you listen," says Neil Portnow of the voting process.
Justin Bieber has also been added to the list of performers at this year's ceremony.
The 2016 Grammy nominations are finally here, and here's who made the cut.