London, Oct 3 Grammy award winner singer and song writer Christina Aguilera is working on her album which, according to its producer, is her best as yet.

"It's just great. I really feel it's one of her best bodies of work that I've heard since 'Stripped'," femalefirst.co.uk quoted Tricky Stewart, the producer of the album, as saying.

The "Candyman" singer has collaborated with M.I.A., Flo Rida, Le Tigre and Santigold on LP "Light and Darkness", which is being produced by Tricky Stewart, the mastermind behind Rihanna's "Umbrella" and Beyonce Knowles' "Single Ladies". (IANS)