Listen to Two Become One (Originally Performed by the Spice Girls) [Instrumental] online. Two Become One (Originally Performed by the Spice Girls) [Instrumental] is an English language song and is sung by Retro Spectres. Two Become One (Originally Performed by the Spice Girls) [Instrumental], from the album Girl Bands Galore - The Backing Track Series, was released in the year 2015. The duration of the song is 3:53. Download English songs online from JioSaavn.