Diet Dr Pepper is a no-calorie Dr Pepper that was first introduced in 1986. This version replaces the high fructose corn syrup found in the original with aspartame. Diet Cherry Chocolate Dr Pepper (2007–2008) was introduced as a limited edition flavor on November 21, 2007. It was discontinued in April 2008. It became available in Canada in early January 2008. A nondiet version was never created. The taste is similar to Canfield's Diet Cherry Chocolate Fudge Soda, but with the distinctive Dr Pepper flavor. It was featured in the song "Cherry Chocolate Rain" by YouTube celebrity Tay Zonday. Upon ceasing production, it was replaced by Cherry Vanilla Dr Pepper.