"Numbers were exchanged. It's legit now," Karmin's Amy Heidemann laughed after the Black Eyed Peas rapper -- who stopped by to hug, greet and trade contact info with the duo -- had moved along the carpet.
Added bandmate Nick Noonan, "We ran into him at iHeart last year, but it was mostly just backstage stuff. Just 'hey' for two minutes and then gone."
Karmin, whose "Hello" EP debuted on Epic records in May, is in the process of putting out a studio album, originally expected for fall 2012. Noonan told Billboard that they've been in the studio, working on the album for much of November. "We put out an EP, and the full-length is coming."
The duo's most recent release, however, was a holiday song recorded for a partnership with Coach. "We just made kind of a little hip-hop reggae thing," Noonan said of their twist on "Sleigh Ride."
"It's very glamorous. It's very winter wonderland," Karmin added, describing the Rachel Zoe-styled video for the Coach campaign.
Heidemann and Noonan have come a long way since taking over YouTube with their covers of popular songs, even nabbing their own hit when their single, "Brokenhearted," peaked at No. 16 on the Billboard Hot 100. "We were concerned at first," said Heidemann. "We were like, 'wow the covers blew up a little bigger than we thought they would.'"
And now, Noonan says, "the big difference is that our original music is actually doing well."
Reporting by Keith Caulfield in Los Angeles.