Listen to Knockin' on Heaven's Door (Acoustic Version) online. Knockin' on Heaven's Door (Acoustic Version) is an English language song and is sung by Troubadour Folk Players. Knockin' on Heaven's Door (Acoustic Version), from the album Greatest Celtic & Acoustic Music Album, was released in the year 2014. The duration of the song is 3:43. Download English songs online from JioSaavn.