Listen to For All We Know (Bonus Track) online. For All We Know (Bonus Track) is an English language song and is sung by Billie Holiday With The Ray Ellis And His Orchestra. For All We Know (Bonus Track), from the album Billie Holiday Sings (Original Album plus Bonus Tracks 1952), was released in the year 2016. The duration of the song is 2:55. Download English songs online from JioSaavn.