Megastar Amitabh Bachchan, who attended the star-studded premiere of late Yash Chopra's last directorial "Jab Tak Hai Jaan" (JTHJ), can't stop singing praises about the film. He feels lead actor Shah Rukh Khan has delivered one of his best performances.

"Each portion poetry, each artist at his and her best, and for Shah Rukh, his best performance after 'Swades', " the 70-year-old posted on his blog.

Also starring Katrina Kaif and Anushka Sharma, JTHJ released Tuesday.

Bollywood bigwigs came together under one roof at the Yash Raj Films (YRF) studio for the premiere of the movie here Monday night.

Yash Chopra, who took to direction for the movie after a gap of eight years, passed away Oct 21 following dengue and multi-organ failure.

The premiere was planned to be a perfect farewell to Chopra, who entertained legions of movie buffs through his 40 years in the Hindi film industry.

Amitabh says the studio was done in a magical way just for the premiere.

"The studio floor was converted into a theatre and film projection was conducted there and then. An unbelievable setting of Baroque and modern, tiered as in some prestigious halls anywhere in the world.

"And the film and stand alone theatre built of such period architecture, reflecting the carving original of the columns, and the entire ambience in the style of some old castle in early Europe.

"It was magical... just the way Yashji would have wanted, " Amitabh said.

It was a memorable evening for Big B, who worked with Chopra in films like "Silsila" and "Deewaar".

"Danced my shoes off with all the youngsters... an amazing evening... spending time with Salman (Khan), Aamir (Khan), Shah Rukh, Katrina (Kaif) and Anushka (Sharma), " he added.