Britney Spears' next single will ''surprise'' people.

The 31-year-old singer will release 'Perfume' from her forthcoming eighth studio album 'Britney Jean' later this year and her record label boss Peter Edge says the quality of her singing will astonish listeners, with the track showcasing a different side to her talents.

Peter told Billboard magazine: There's a song we feel fairly strong will be the second single called 'Perfume'.

''It was written by Sia and could be a big career song. It's more of a downtempo song, but people are amazed at the quality of her vocals on it. She sings it beautifully and it has a real sincerity to it. And it's outstanding -- I think people are not only gonna be surprised but also see another side of Britney.''

Peter can't wait for fans to hear 'Britney Jean' as the record is ''great'', largely thanks to the input from Black Eyed Peas star

He added: ''We're feeling really good about the Britney album. We're not quite sure how the credits are gonna be, but's really the main creative on the album - but he won't be the only one. He has a lot of great songs. There's a lot more personal content on this album than we've seen from her in the past.''