Listen to Kab Aayi Achha Din online. Kab Aayi Achha Din is a Bhojpuri language song and is sung by Dharmendra Kumar. Kab Aayi Achha Din, from the album Kab Aayi Achha Din, was released in the year 2021. The duration of the song is 4:22. Download Bhojpuri songs online from JioSaavn.