Listen to Love Letter (Karaoke Version) [Originally Performed By R. Kelly] online. Love Letter (Karaoke Version) [Originally Performed By R. Kelly] is an English language song and is sung by Mark and Charlie. Love Letter (Karaoke Version) [Originally Performed By R. Kelly], from the album Karaoke Collection, Vol. 28, was released in the year 2017. The duration of the song is 4:50. Download English songs online from JioSaavn.