Mukesh Chand Mathur, better known mononymously as Mukesh, was an Indian playback singer. Mukesh is considered to be one of the most popular and acclaimed playback singers of the Hindi film industry. Amongst the numerous nominations and awards he won, his song "Kai Baar Yuhi Dekha Hai" from the film Rajnigandha (1973) won him the National Film Award for Best Male Playback Singer.

Rajnigandha (transl. Tuberose) is a 1974 Hindi film directed by Basu Chatterjee. It is based on the short story "Yahi Sach Hai" by noted Hindi writer Mannu Bhandari. The movie starred Amol Palekar, Vidya Sinha and Dinesh Thakur in the lead.