Saif Ali Khan and Sonakshi Sinha's impromtu jig on the song "Tamanche pe disco" from forthcoming movie "Bullet Raja" was so entertaining that choreographer Ganesh Acharya decided to keep it that way.

"Ganeshji was very impressed with Saif and Sonakshi's unrehearsed and unplanned dancing (to the song), so he decided to include that impromptu chemistry in the song," a source close to the team, said in a statement.

The track has been composed by hip-hop band RDB.

Directed by Tigmanshu Dhulia, "Bullet Raja" is all set to release Nov 29.