Madonna has teased her upcoming secret project with a new video.

The singer has been hinting about her collaboration with Steven Klein on Instagram over the past few weeks and has now uploaded a teaser video.

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The clip focuses on a twitching eyeball and a blurry red figure, while soundtracked by deep thuds and glitchy alarm rings.

It is not yet known what Madonna is working on, but the star has been promoting the hash tag #secretproject to get fans excited.

Klein is a celebrated photographer who has previously worked with Madonna on visuals for her 'Re-Invention', 'Confessions' and 'Sticky & Sweet' world tours.

The artist more recently collaborated with Lady GaGa for her 'Alejandro' music video and Fame perfume advert, and Rihanna for an Armani jeans campaign.

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