British singer Sam Smith has won big at this year's Grammy Awards, picking up four prizes, including best new artist and record of the year.
He eclipsed superstars Beyonce and Pharrell Williams, who each won three awards.
Smith (22) was also named best new artist, beating Bastille, as well as Iggy Azalea, Brandy Clark and girl group HAIM.
"Before I made this record, I was doing everything to try and get my music heard," Smith said after his second win of the night.
"I tried to lose weight and I was making awful music and it was only until that I started to be myself that the music started to flow and people started to listen."
Smith's song Stay With Me, from his album In The Lonely Hour, has achieved success on both sides of the Atlantic, and he also took the prize for best pop vocal album and song of the year.
But he lost out in the pop solo category to Pharrell Williams, whose song Happy earned him the award.
Pharrell said: "This is super-awkward so I'm going to moonwalk my way off the stage."
Taylor Swift, who presented the best new artist award to Smith quoted from one of her most recent hits as she offered him a word of advice.
"As a former loser of best new artist... it's gonna be fine. Just shake it off," she said.
Ed Sheeran, who was up against Smith in the best album category, performed after an introduction by James Cordon, who is set to become the host of popular US chat series The Late Late show.
Singer-songwriter Beck won best rock album and album of the year for Morning Phase, while Miranda Lambert, who performed her hit Little Red Wagon, won best country album for Platinum.
R&B singer Beyonce and her rapper husband Jay Z won best R&B performance for Drunk In Love.
"I'd like to thank my beloved husband, I love you deep," Beyonce said.
The ceremony featured a number of star-studded collaborations, including Annie Lennox and Irish star Hozier, and a performance from Paul McCartney, Kayne West and Rihanna.
Amid the glitz and the glamour, the ceremony turned serious when President Barack Obama called on musicians and music fans to pledge to stop domestic violence.
"It's not OK and it has to stop," Mr Obama said in a message aired during the show.
"Artists have a unique power to change minds and attitudes and get us thinking and talking about what matters."
Afterwards Sam Smith said he was the happiest he had ever been.
