Washington D.C., Feb. 11 -- : Former first lady Michelle Obama made a surprise appearance at the Grammy Awards.

She was welcomed onstage by host Alicia Keys and joined Lady Gaga, Jada Pinkett Smith and Jennifer Lopez for an empowering opening address to the crowd, wrote The Hollywood Reporter.

Speaking at the event, she said, "From the Motown records I wore out on the Southside to the 'Who Run the World' songs that fueled me through this last decade, music has always helped me tell my story."

She further added, "Music helps us share ourselves, our dignity and sorrows, our hopes, our joys. Music shows us that all of it matters."

Gaga too spoke on the power of music, saying, "They said I was weird, but music led me to all of you and to my...