Madonna has brought out a download single in aid of the Live Earth appeal.

Hey You is inspired by climate change and was produced by Neptunes man Pharrell Williams.

It can be downloaded now from Microsofts Live Earth website (CLICK HERE TO DO IT) with 13p from each purchase going to the Alliance For Climate Protection.

Madonna will appear at the Live Earth concert at Wembley Stadium on July 7 with Beastie Boys, Bloc Party and Red Hot Chilli Peppers.

The concerts which take place in arenas around the world aim to raise awareness of Global Warming and what we can do to prevent it.

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'TNT'