Learn how to sing in harmony in under 4 minutes! In this video, we start from the basics and give you an easy, beginner's introduction to harmony. We will demonstrate the most common type of harmony used in popular music with a line from a classic song you know and love: 'Bye Bye Love' by the Everly Brothers. For more O&O go to: http://www.oandoduo.com/ https://www.facebook.com/oandoduo https://www.instagram.com/oandoduo https://twitter.com/oandoduo