Compound cakes are a number of fireworks linked together to fire a whole display in one single light of a fuse! Ignite, stand back and watch a large impressive show burst in front of your very eyes and impress your audience with a display they will never forget. A compound firework can contain around two to six fireworks fused together and have a longer firing duration. They are among some of the most popular fireworks to buy when providing your very own show.