Beyoncé's upcoming 'Lemonade' show on HBO will last for one hour.

The singer recently debuted a 20-second clip for the mysterious project ahead of its unveiling on the US channel on Saturday (April 23).

A full-length one minute trailer was later uploaded to YouTube.

It features the US star asking questions like 'What are you hiding?', 'Why can’t you see me?' and 'What am I doing, my love?'.

A listing for HBO now reveals that the show will last for 60 minutes.

The mystery surrounding 'Lemonade' has increased speculation that Beyoncé could be about to release a new album.

The singer recently unveiled the new single 'Formation' and a world tour of the same name.

Her last record 'Beyoncé' was released in 2013 with no warning.

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Watch Beyoncé's 'Lemonade' trailer below: