It's hard to believe our favourite furry friends – Alvin, Simon and Theodore – have been around since 1958. The singing sensations have won over three generations with their well-meaning antics and impossibly catchy tunes.

This week marks the DVD release of their most recent feature film, 'Alvin and the Chipmunks: The Squeakuel.' In this installment, we are reunited with the Chipettes, the Chipmunks' sassy female counterparts. This time around, the girls are voiced by Amy Poehler, Anna Faris and Christina Applegate. Jason Lee returns as Dave Seville, the Chipmunks' human guardian, while David Cross is back as the evil record industry villain.

The Blu-ray/ DVD combo pack includes bonus features like music videos, song trivia and a featurette called 'Munking History: 50 years of Chipmunk Mischief, Mayhem and Music.'

We caught up with the Chipmunks' real-life human guardians, Ross Bagdasarian Jr. and Janice Karman, to chat about the rich Chipmunks history. The two have been helming the Chipmunks franchise since 1972, after the untimely passing of Ross Bagdasarian Sr., who created the Chipmunks back in the late '50s. On top of their roles as producers, Bagdasarian Jr. and Karman have also been providing the voices or the Chipmunks and the Chipettes over the years in their TV shows, movies and albums (Bagdasarian Jr. does Alvin's singing voice in the most recent features, and Karman redesigned all of the CGI Chipmunks). The two fill us in on everything from how a facetious Philadelphia DJ and Justin Timberlake may have unwittingly saved the Chipmunks, to why the furry little 'munks still don't wear pants.