If you're a fan of the duet, then it's your lucky day.
Kelly Clarkson stopped by "The Tonight Show with Jimmy Fallon" and she teamed up with Jimmy to perform "The History of Duets." Many of your favorite all time collabs were represented from Sonny & Cher's "I Got You Babe" to Dolly Parton and Kenny Rogers' "Islands In the Stream to "Just Give Me A Reason" from Pink and Nate Ruess.
Hopefully we will be seeing many more editions of "The History of Duets." It's cousin, "The History of Rap," features the bromance of Jimmy and Justin Timberlake delivered its 5th installment in February 2014. We're certainly overdue for "The History of Rap, Part 6."