"My mom was very disturbed by how much we did it"Credit: Tegan and Sara official YouTubeTegan and Sara performed their recent single ‘I’ll Be Back Someday’ during an appearance on US TV last night – check out the clip below. The Canadian duo, who released their album ‘Hey, I’m Just Like You’ yesterday (September 27), featured on the latest episode of The Late Show with Stephen Colbert to promote the project. After playing […]The post Watch Tegan and Sara perform 'I’ll Be Back Someday’ and discuss high school LSD habit appeared first on NME.