Lady Gaga wins three Grammys, Michelle Obama makes surprise appearance

LOS ANGELES — Childish Gambino's searing "This is America" became the first hip-hop track to win a song of the year Grammy on Sunday, while Lady Gaga dominated the early awards and former US first lady Michelle Obama made a surprise appearance at the event.

Lady Gaga's hit song "Shallow" from the movie "A Star is Born" won two Grammys, while the musician-turned actress took a third Grammy home for her "Joanne (Where Do You Think You're Going)", which won for pop solo performance.