Listen to Sound of the Underground (Originally Performed by Girls Aloud) [Instrumental] online. Sound of the Underground (Originally Performed by Girls Aloud) [Instrumental] is an English language song and is sung by Retro Spectres. Sound of the Underground (Originally Performed by Girls Aloud) [Instrumental], from the album Girl Bands Galore - The Backing Track Series, was released in the year 2015. The duration of the song is 3:39. Download English songs online from JioSaavn.