Lady Gaga faced the wrath of thousands of 'proper' music fans yesterday when a picture of her playing on John Lennons famous white piano emerged online.

The pic, taken by the late Lennon's son Sean, was posted on Twitter but soon taken down after Sean faced a barrage of angry tweets criticising Gaga for playing the instrument.

Trying to defend his Gaga, Sean said; 'Pianos meant are to be played. Why is everyone so uptight? 

'What should we do, lock it away in a dusty room? So judgemental...'

 'Come on, lighten up...life's too short, there're enough real problems in the world.... 

'Firstly, he gave that piano to my mother for her birthday, it is hers, secondly, he was not uptight the way you seem to be.'

Luckily PopDash managed to grab a copy of the picture before it was removed. PREPARE TO BE OFFENDED PEOPLE.