"Music has always helped me tell my story", Obama said at the Staples Center in Los Angeles.
Pop royalty Gaga meanwhile won an award in the visual media group for her heart-pounding hit "Shallow" of the blockbuster film "A Star Is Born", and another for best pop solo performance for "Joanne". Black Panther won an early Grammy Award for best score soundtrack for visual media in advance of Sunday night's awards ceremony.
Along with Best Alternative Album, Colors was also awarded with a Grammy for Best Engineered Album, Non-Classical. "And I am not hung up on what happens or doesn't happen", she said.
The Grammys have also struggled with gender inequality, an issue that came to its head a year ago. The telecast of the awards show is scheduled to run from 8:00 until 11:30 p.m. ET.
Keys told CBS news this year´s greater representation from women was "far overdue".More news: Greece backs Macedonia's North Atlantic Treaty Organisation accession
The Grammys' tense relationship with the hip-hop community goes back decades.
"The performance is based off of my grandma's childhood, and I have my family in the performance", she said on the red carpet.
"Yes, we have so much more work to do, but this is a moment to be celebrated". Alicia Keys had the support of her love Swizz Beatz from the moment she stepped out on the starry night.
Carlile is the most nominated woman with six nominations, including bids for song and record of the year with "The Joke".More news: The Division 2 Private Beta is Now Live
H.E.R., Chloe x Halle, Margo Price, Dua Lipa, Bebe Rexha and Jorja Smith are also up for best new artist.
"This is just the beginning of moving to a more inclusive future", Monae said.
When asked about the lack of women in the top categories at the 2018 Grammys, Recording Academy CEO Neil Portnow said women need to "step up". He later acknowledged that it was a "poor choice of words", and it forced the academy to launch a new task force focused on inclusion and diversity.
Before this year's Grammys, Beck won five previous times, including his 2015 awards for Best Rock Album and Album of the Year for Morning Phase. Pop singer Ariana Grande recently tweeted that she pulled out of performing this year due to a creative disagreement with its producers, while rappers Childish Gambino (a.k.a. Donald Glover), Drake and Kendrick Lamar all reportedly turned down offers from the show, which has a fraught history with hip-hop artists.
"I've kept my mouth shut but now you're lying about me", she tweeted.More news: Bissonnette judge's 'unusual' sentencing decision likely to be appealed
Grande added that she had offered to perform three different songs, but that the process, which she wrote should be "about art and honesty", wound up feeling like a game: "that's not what music is to me", she concluded.