Laura Marling plays new song at live Tiny Desk Session - video
The singer-songwriter played 'Don't Ask Me Why' and 'Sophia' from last year's A Creature I Don't Know, as well as a new song called 'Once'.
Marling last month revealed that she had finished writing her fourth album.
She had previously teased the idea of releasing a punk album under another name.
Marling this weekend plays the Latitude festival, which is headlined by Elbow, Paul Weller and Bon Iver.
She was nominated for this year's 'British Female Solo Artist' gong at the Brit Awards, but lost out to Adele.