Listen to Happy Birthday and On The Merry Go Round online. Happy Birthday and On The Merry Go Round is a Tamil language song and is sung by Usha Uthup and K. V. Mahadevan. Happy Birthday and On The Merry Go Round, from the album Raktha Thilakam, was released in the year 1963. The duration of the song is 3:21. Download Tamil songs online from JioSaavn.