Bowie has a history of surprising fans

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Media captionThe BBC's Will Gompertz looks back at David Bowie's career

David Bowie has released a new single on his 66th birthday, following years of silence and speculation.

Bowie hasn't performed since 2006 and has rarely been seen in public since then - but he has a history of surprising his fans.

The BBC's Will Gompertz casts an eye over the musician's enigmatic career.

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