Amitabh Bachchan has gone behind the mike for a promotional song for Pro Kabaddi League (PKL). The megastar has lent his voice to a song titled `Le panga`, which has been released in four versions.

The 72-year-old, who has sung in some movies as well, shared the news about the new track on his official blog. His son Abhishek is an owner of one of the teams - Jaipur Pink Panthers - of Pro Kabaddi League (PKL), which will begin from July 18 here.

`Okaaayyyy... so the song that I have been musing and easing and frightening you all with, is a promotional song for Pro Kabaddi, the game that starts on July 18th... and yes Jaipur Pink Panthers with their new logo and the leadership of its owner Abhishek will be playing the opener in Mumbai... and so Star that broadcasts the game asked me to get involved in its singing,` Big B wrote on his official blog.

The `Paa` star also shared that `the song has been written by Piyush Pandey the iconic Advertising Guru and dear friend... and it had been recorded as per the tune dictated by the channel`.

Amitabh has improvised the song by adding his bit to the track, which is out in Hindi and Marathi language.

`I felt though that it was a bit slow keeping in mind the pace of the game and so I composed a faster version, and recorded it at my dear friend and music director Aadesh Srivastav's studio... this has now gained approval and shall be on air or on the net by tomorrow morning IST... there are, therefore, 4 versions sung by me -- 2 original in Hindi and Marathi ad 2 my compositions in both languages,` he shared.

Earlier, Big B has crooned numbers like "Holi khele Raghuveera" and "Ekla chalo re" and "Piddly".

On the film front, the cine icon is gearing up for `Wazir`, which also stars Farhan Akhtar.