The success of Poovellam Kettupar's BGM can be measured by its influence on Tamil cinema as a whole. The film's music marked a turning point in Yuvan Shankar Raja's career, establishing him as a leading music director in the industry. The "Hey Rathu" theme has been referenced and remixed in numerous films and albums, a testament to its enduring appeal. Moreover, Poovellam Kettupar's BGM raised the bar for film scores in Tamil cinema, inspiring a new generation of music directors to experiment with innovative themes and compositions.

: Recent high-definition lyrical and video song versions have been uploaded by music labels like Pyramid Music , keeping the film's music trending among the "vintage Yuvan" fan base.

The "Hey Rathu" background music (BGM) from the 1999 Tamil film Poovellam Kettuppar is a signature composition by Yuvan Shankar Raja