Rum Bum Bum Song Lyrics Rum Bum Bum Song Lyrics from “Coffee With Kadhal“. Yuvan Shankar Raja, S P Balasubrahmanyam, K S Chitra sing Rum Bum Bum . Rum Bum Bum song tuned by Yuvan Shankar Raja . Rum Bum Bum Song lyrics were penned by Vaali .