Listen to What's Up (Originally Performed by 4 Non Blondes) [Instrumental] online. What's Up (Originally Performed by 4 Non Blondes) [Instrumental] is an English language song and is sung by Retro Spectres. What's Up (Originally Performed by 4 Non Blondes) [Instrumental], from the album Girl Bands Galore - The Backing Track Series, was released in the year 2015. The duration of the song is 4:11. Download English songs online from JioSaavn.