Tegan And Sara are the rare group who, even at their chirpiest and dance-poppiest, will always sound pretty great, even early in the morning, even taking the Calgary accents into account. Over the weekend, the duo showed up on CBS This Morning to test this hypothesis, playing a stripped-down and drumless rendition of their single “Closer,” and doing the ballad “I Was A Fool” completely acoustic. Check it out here.