The action comedy movie, Bol Bachchan has the track Bhaag DK Bose from Aamir Khan's production Delhi Belly. Rohit Shetty was keen to use this song on a musical sequence filmed on Abhishek Bachchan. So, the Bol Bachchan team approached Aamir Khan, who happily let them use the song without any monetary compensation.
A source told a media house, "They were told that Aamir holds the rights for the song. When the star was approached, he gave his consent immediately. But when the talk veered towards monetary compensation, he refused to be compensated for it."
The source further added, "The copyright of the songs are usually held by music companies from which permission is taken before they are used. Otherwise there is a copyright infringement issue. For every song utilised, a royalty has to be given to them. But in Aamir's case as the rights are with him, the royalty goes to him."
That is why Bol Bachchan begins with a 'Thank You Aamir Khan' credit.