Listen to 1234 Happy Birthday Bolo Yaar online. 1234 Happy Birthday Bolo Yaar is a Bhojpuri language song and is sung by Vicky Vox. 1234 Happy Birthday Bolo Yaar, from the album 1234 Happy Birthday Bolo Yaar, was released in the year 2022. The duration of the song is 3:01. Download Bhojpuri songs online from JioSaavn.