Rahat Fateh Ali Khan has sung the new song 'Lag Ja Gale' from the upcoming Sanjay Dutt and Aditi Rao Hydari starrer film 'Bhoomi'. The song has been composed by the composer duo Sachin-Jigar with lyrics by Priya Saraiya. Directed by Omung Kumar, 'Bhoomi' is scheduled to release on September 22.