Why is Straight No Chaser Trending?

LOS ANGELES (CBS) Straight No Chaser is trending, and not because it's a hot holiday drink. The men's a cappella group made up of ten University of Illinois grads shot to stardom after their performance of "The 12 Days of Christmas" went viral on YouTube in 1998.

The group are now out of school and touring the country doing cleverly arranged renditions of popular songs from Madonna's "Like a Prayer" to Jason Mraz's "I'm yours". You can visit their site to see if they will be stopping by your city soon.

Check out my interview with them during The Early Show on Saturday's Backstage Live! where they gave me their best Beyonce impression and share what life's like as 10 guys on the road.