Alvin and the Chipmunks is an animated music group created by Ross Bagdasarian Sr. in 1958. Known for their high-pitched voices, the group consists of three anthropomorphic chipmunks: Alvin, Simon, and Theodore. Their musical style spans various genres, with a focus on pop and children's music. The group's most significant contribution to music history is the novelty of their unique vocal technique, which has led to numerous chart-topping hits, including their Grammy-winning song "The Chipmunk Song (Christmas Don't Be Late)".