The 23-year-old star performed at the Roundhouse in London as part of the iTunes Festival, her first performance since she had to cancel a US tour because of laryngitis.
She performed to 2,000 fans, and opened the show with her track Hometown Glory, according to website Gigwise.
It's claimed she also sung some of her biggest hits including Chasing Pavements, Make You Feel My Love and Rolling In The Deep.
She also performed a cover version of The Cure track Lovesong and Bonnie Raitt's I Can't Make You Love Me.
But she saved her song Someone Like You for last.