The 22-year-old’s wins, including the two top awards of song and record of the year, eclipsed global superstars Beyoncé and Pharrell Williams, who each walked away with three gongs compared to Smith’s four.
Describing the night as the best of his life, Smith had one special person to thank — the inspiration behind In The Lonely Hour which featured the massive hit ‘Stay With Me’.
He told the celebrity crowd gathered at the Staples Centre in Los Angeles: “Just a quick one — I want to thank the man who this record is about, who I fell in love with last year. Thank you so much for breaking my heart because you got me four Grammys.”
Ahead of the marathon ceremony that lasted more than three hours, Smith had modestly said he was happy just to have people listen to his music.
“I’m just happy people know who I am. Last year, no one knew who I was.”
Accepting his second award, for best pop vocal having already been named best new artist, Smith said his success came only when he learned to be himself.
He told the audience: “I just wanna say that before I made this record, I was doing everything to try to get my music heard... I tried to lose weight and I was making awful music. It was when I started to be myself that the music flowed.”
Smith, who performed a duet at the Grammys with Mary J Blige, kept his Twitter followers up to date with his feelings on wins throughout the event. Smith also uploaded pictures of himself with some of the biggest stars in the room, including Rihanna and Taylor Swift.
Speaking backstage while clutching his four trophies, Smith said it was awkward trying to juggle them all. He added: “I feel like Kate Winslet at the Oscars right now.”
But instead of celebrating with champagne and haute cuisine, he said the first thing on his wish list was fast food: “I need to go to In-N-Out Burger because I’ve been having a lot of green juice recently. This really is the best night of my life.
Asked what could top this success he said: “A boyfriend would be nice,” adding he would like a man with patience who could clean all his Grammys.
Ed Sheeran, who performed with ELO’s Jeff Lynne, left empty-handed despite being nominated in both the best album, won by US singer Beck, and pop vocal album categories. Hozier, who performed with Annie Lennox, missed out on song of the year.