The Chapin Sisters are an American folk-pop duo from Brooklyn, New York, that formed in 2004. The ensemble consists of the sisters Abigail and Lily Chapin and is famous for its "blood harmonies" and for an acoustic cover of the Britney Spears track “Toxic” that gained national radio play before their first live performance. They achieved early professional recognition as children contributing to the records of their father, Tom Chapin, and are part of a prominent musical family that includes their uncle, Harry Chapin. Their discography includes the debut studio recording Lake Bottom LP (2008), followed by Two (2010) and A Date With the Everly Brothers (2013), the latter of which reached number 2 on the iTunes Singer/Songwriter chart. The sisters have collaborated with artists including She & Him and Cass McCombs. Following the 2010 departure of their half-sister, Jessica Craven, the ensemble has continued as a duo and released the recording Today's Not Yesterday in 2015.