Ross Bagdasarian Sr. created Alvin and the Chipmunks, introducing the characters Alvin, Simon, and Theodore, initially as a novelty record band.
Ross Bagdasarian Sr. released the hit single "The Chipmunk Song (Christmas Don't Be Late)", which became a Christmas classic and won three Grammy Awards.
The first Alvin and the Chipmunks animated TV series premiered on Saturday mornings, bringing the characters to a wider audience.
The live-action/CGI film "Alvin and the Chipmunks" was released, revitalizing the franchise for a new generation.