The "Har Har Mahadev" song is a recent devotional song dedicated to Lord Shiva

Sachet Tandon

Parampara Tandon

Har Har Mahadev Song sung by Sachet Tandon and Parampara Tandon

with the music composed by Sachet-Parampara

The lyrics for "Har Har Mahadev" are written by Sachet-Parampara as well

The music video for the song is released by T-Series