MUMBAI: Megastar Amitabh Bachchan who has been part some extremely popular dance songs, says he finds them very difficult.

"Song and dance have always been a major crisis for me. Moving, singing, expressing among some exquisite professionals, makes you feel so inadequate and useless. Covering up is also a major deterrent. We are seen and observed in song, unlike perhaps an acting scene, where one could merely speak to a wall and not have the compulsion to face the camera. But here in song, with the broadest smile, giving impression of great fulfilment and happiness can be one of the most fake expressions ever devised by actors," wrote the 69 year old veteran actor on his blog.

"I work tomorrow on the ‘Bol Bachchan’ song, one that I have been asked to sing and perform on. I have through the years discovered, that lip syncing your own singing can be most tormenting," added Sr. Bachchan who will recreate his iconic entry scene in the song ‘My Name is Anthony Gonsalves’ for ‘Bol Bachchan’.