Listen to Haapy Birthday Rahul Bhai Ho online. Haapy Birthday Rahul Bhai Ho is a Maithili language song and is sung by PK Balamua. Haapy Birthday Rahul Bhai Ho, from the album Haapy Birthday Rahul Bhai Ho, was released in the year 2023. The duration of the song is 3:08. Download Maithili songs online from JioSaavn.