'Gajanana', the first song of Sanjay Leela Bhansali's upcoming film "Bajirao Mastani" is set to release.

A grand launch event has been organised at the Shree Chhatrapati Shivaji Sports Complex, Balewadi Stadium in Pune today and Eros Now has provided the link to watch it live, which has started from 1 pm. 

Click Here for Live streaming of 'Gajanana' song launch

A mosaic image of Lord Ganesha has been constructed that will be 195ft huge.

This biggest formation will be created by 5,000 students who have been called from across the country. Also, Ranveer and Deepika Padukone are expected to perform live to the track.

To celebrate 'Ganesh Chathurthi', which is on 17 September, the song launch has been timed two days before the main festival. Singer Sukhwinder Singh has lent his voice to the song.

Check out the full audio, shared by Eros on Twitter.

Pictures from the stadium is doing the rounds on the internet, which show the preparations for the launch.

In the morning, the first look was revealed which has Ranveer, as Peshwa Baji Rao, sitting in a royal manner in front of the huge idol of Lord Ganesha. Photos of the song are doing the rounds on the internet. In one of the photos, Priyanka Chopra, who is playing Peshwa Baji Rao's wife Kashibai, is seen with puja thali, which has a lot of diyas.

After Bhansali's "Ram-leela", the couple is back on the big screen to re-create their chemistry in this period drama.

The film, which is SLB's most ambitious project, is based on the love story of warrior Peshwa Baji Rao, played by Ranveer and his second wife Mastani, played by Deepika.

The film is slated to hit theatres on 18 December, along with Shah Rukh Khan and Kajol's "Dilwale" directed by Rohit Shetty.