Lal Paharir Deshe Ja (You belong to the land of red hills) is a Bengali folk music based on a poem written by Arun Chakraborty in 1970s. It was set to tune in 1976 by Subhas Chakrabarty, and has since become a popular song with various interpretations sung by different artists, from folk singers to Urban music artists.
Arun Chakraborty, a folk artist (and engineer by training), wrote the poem after spotting a leafless Mahua tree in at Srirampur Station, he considered the tree to be misfit and thought that it should belong to the red hills.He went home and wrote down his thoughts. He used a tribal dialect while penning the poem.
References
Lal Paharir Deshe Ja Wikipedia(Text) CC BY-SA