Harano Sur (English: Lost Melody) is an Indian Bengali television romantic drama.

The show aired on Bengali General Entertainment Channel Sun Bangla and is also available on digital platform Sun NXT, that premiered on 7 December 2020 and ended on 30 May 2021.

It is generated by Surinder Films and starred by Sarmistha Acharjee and Priyo Banerjee.

Ironically, it is Nakshatra who didn't get to know earlier about the significance of music in Ahana's life.

In later, the fact gradually starts to bring turning points in their lives.