(CNN Wires) -- The Grammy Awards ceremony hasn't even started yet and Lady Gaga is already a two-time winner.

The singer won an award for best pop solo performance for "Joanne" as well as best song written for visual media for "Shallow" from her Oscar-nominated film "A Star is Born."

"I'm not gonna be able to wear any makeup tonight. We just won our first of Grammy nominations for the night. I'm in tears with honor and gratitude," she wrote on Twitter after her first win.

After her second, for the song named the superstar's aunt, Lady Gaga called the award "more than me & my family could ever dream of."

"I sang that version in one take, & poured my entire life & soul into it," she wrote. "Thank you so much for this gift I am completely shocked."

Kacey Musgraves, Childish Gambino, Brandi Carlile and Ariana Grande, who will be a no-show this year, were also among the pre-ceremony winners.

Heading into music's biggest night, rap artists Kendrick Lamar and Drake topped the nominations, with eight and seven, respectively. But it was female artists who dominated nominations in the top categories.

The Grammys this year expanded the major categories of album of the year, record of the year, song of the year and best new artist from five nominees to eight, some say in response to the lack of diversity among nominees in previous years.

The Grammys airs Sunday at 8 p.m. ET on CBS, with host Alicia Keys. You can follow CNN's coverage live here.

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