Sam Smith won four Grammys on Sunday night, including record and song of the year. He used his acceptance speech to reflect on a time in which he lost weight in order to try and break through in the music industry.

Sam SmithSam Smith won four Grammy awards including Record and Song of the Year

"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," he said.

Smith described the night as the best of his life and confirmed that a break-up with his ex-boyfriend inspired several songs on his album, In the Lonely Hour.

"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."

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Later, Smith performed his huge selling track Stay With Me with Mary J Blige.  The singer tweeted throughout the night and posted photos with Rihanna and Taylor Swift.

Elsewhere at the ceremony, Pharrell Williams, Beyonce and Rosanne Cash - daughter of country legend Johnny - won three awards each. Beck won two including best album, while there was also wins for Clean Bandit with Jess Glynne and Aphex Twin.

Madonna, Kanye West, Katy Perry and Sir Paul McCartney were among the performers at the ceremony, while Jessie J and Sir Tom Jones; Hozier and Annie Lennox; and Lady Gaga and Tony Bennett performed duets.

Though the night clearly belonged to Smith, just nine months after the release of his debut album.

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