Listen to Cha ! Bull ! online. Cha ! Bull ! is an English language song and is sung by Bert Kaempfert. Cha ! Bull !, from the album The Big Bands Collection, Vol. 12/23: Bert Kaempfert - Swinging Safari, was released in the year 2012. The duration of the song is 2:31. Download English songs online from JioSaavn.