"Chaiyya Chaiyya" (Hindi: चैंय्या चैंय्या, Urdu: چیّا چیّا), "[walk] in the shadow") is the first song in the famous Hindi film Dil Se directed by Mani Ratnam.
The song was composed by film composer A.R. Rahman and sung by Sukhwinder Singh. It was originally written in Tamil. It became popular quickly upon release and its music video gained the same status, partly because it was filmed on a moving train. .