Listen to Aaj Birthday Yaar Ko online. Aaj Birthday Yaar Ko is a Rajasthani language song and is sung by Samdu Gurjar and Parkash Dangi. Aaj Birthday Yaar Ko, from the album Aaj Birthday Yaar Ko, was released in the year 2020. The duration of the song is 5:11. Download Rajasthani songs online from JioSaavn.