Lily Allen debuted her new song at Mark Ronson's show at The Savoy in London on Monday night (24.10.16).

Lily Allen

Lily Allen

The 'Smile' hitmaker took to the stage to perform two songs at the MasterCard Priceless event including a brand new electronic dance track, which she has created with the superstar DJ, and their 2007 Kaiser Chiefs cover of 'Oh My God'.

The 31-year-old singer is still learning the words to the as-yet-untitled track as she had to read most of it from a lyrics sheet.

Speaking at her first concert in over a year, Lily told the crowd: "I haven't played anything for about a year I'm really nervous."

And it could mean her new album is on the way from the brunette beauty as she told the audience she has been in the studio with Ronson, 41 - who is just wrapping up promo for Lady Gaga's latest record 'Joanne' - this week.

Before performing the new song, she said: "Mark and I have been in the studio a little bit this week."

It was previously revealed Lily has teamed up with the 'Uptown Funk' hitmaker - her long-time collaborator - for her upcoming record and the producer said she has channeled the heartbreak caused by her separation from Sam Cooper into her lyrics.

Speaking earlier this year, he said: "We've been writing together again on the new record. I feel like they are some of the best songs she's written. Her voice sounds incredible. The stuff I'm working on is some of her most honest and heartbreaking music ever. She writes so honestly you can feel it."

Lily - who has two daughters, Ethel, four, and Marnie, three, with Sam - hasn't released an album since 2014's 'Sheezus' and Mark believes the music world needs her to return.

He said: "She's like a needed performer. There's nobody really doing s**t like that, really honest."