Listen to Happy birthday Yar Mera Ko online. Happy birthday Yar Mera Ko is a Rajasthani language song and is sung by Gaynsingh Chawadi. Happy birthday Yar Mera Ko, from the album Diwani I Love Bol Cha, was released in the year 2022. The duration of the song is 6:33. Download Rajasthani songs online from JioSaavn.