Mariah Carey has unveiled her new single.

The singer is releasing the song 'Almost Home' for the new Disney film Oz The Great and The Powerful.

The vocal veteran had previously teased the track with a short clip, but yesterday (February 18) she debuted the full cut.

'Almost Home' is due to be released officially today (February 19) via iTunes.

The artwork meanwhile for the song can be seen below, with the cover using a grand image from the film.

Oz The Great and The Powerful is due for release on March 8, with stars such as Mila Kunis and James Franco in the cast.