Sing has grown from Keith and Kristyn Getty's passion for congregational singing; it's been formed by their traveling and playing and listening and discussing and learning and teaching all over the world.

And in writing it, they have five key aims:

- to discover why we sing and the overwhelming joy and holy privilege that comes with singing
- to consider how singing impacts our hearts and minds and all of our lives
- to cultivate a culture of family singing in our daily home life
- to equip our churches for wholeheartedly singing to the Lord and...