Rosanne Cash won the 2015 Grammy Award for Best American Roots Song, for ‘A Feather’s Not a Bird.'

Cash shares the award with John Leventhal, who produced and arranged her album 'The River & the Thread' and lent his musical talents to the song. Cash was visibly flustered from the win, having just left stage after winning the award for Best American Roots Performance.

“Oh my God! Umm ... What was the award for??" she said, looking up at the screen to remind herself. "I’ve got to thank John Leventhal. His name wasn’t on the cover of the album, but this was a collaboration … Wow, I’m overwhelmed. Thank you so much.”

Steve Martin and Edie Brickell took home the award in 2014, the first year of the category. Martin and Brickell were up for this year's award as well, along with the Steep Canyon Rangers, for ‘Pretty Little One.' Also nominated were the Del McCoury Band with ‘The New York Trains,' Jesse Winchester‘s ‘Just So Much’ and John Hiatt‘s ‘Terms of My Surrender.’

Cash also received the Best American Album trophy. See a full list of 2015 Grammy winners here.

See Photos From the 2015 Grammy Awards