In 2014, the sisters recorded backing vocals with the supergroup The New Basement Tapes for their album Lost on the River, performing on the tracks "Kansas City" and "The Whistle Is Blowing".
ב-2014, האחיות הקליטו קולות רקע עם ההרכב The New Basement Tapes עבור האלבום Lost on the River, בשירים "Kansas City" ו "The Whistle Is Blowing".